{"title":"Air Horns","description":"","products":[{"product_id":"h00855ece","title":"Powerdown Hadley Air Horn - 22in (559mm) | Round Bell | Chrome Zinc","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 22in (559mm) | Round Bell | Chrome Zinc\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00855ECE | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374041346,"sku":"H00855ECE","price":284.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00856","title":"Powerdown Hadley Air Horn - 19in (482mm) | Round Bell","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 19in (482mm) | Round Bell\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00856 | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374074114,"sku":"H00856","price":284.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00856ece","title":"Powerdown Hadley Air Horn - 19in (482mm) | Round Bell | Chrome Zinc","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 19in (482mm) | Round Bell | Chrome Zinc\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00856ECE | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374106882,"sku":"H00856ECE","price":284.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00878a","title":"Powerdown Hadley Air Horn - 37.5in (952mm) | Round Bell | Chrome Steel","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 37.5in (952mm) | Round Bell | Chrome Steel\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00878A | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374139650,"sku":"H00878A","price":469.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00885","title":"Powerdown Hadley Air Horn - 21in (533mm) | Round Bell | Non-Emergency","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 21in (533mm) | Round Bell | Non-Emergency\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00885 | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374172418,"sku":"H00885","price":284.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00910ca","title":"Powerdown Hadley Dual Air Horn | Round Bell | Chrome Steel","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Dual Air Horn | Round Bell | Chrome Steel\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00910CA | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374205186,"sku":"H00910CA","price":309.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00977","title":"Powerdown Hadley Air Horn - 29in (736mm) | Rectangular Bell | Chrome Steel","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 29in (736mm) | Rectangular Bell | Chrome Steel\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00977 | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374237954,"sku":"H00977","price":444.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00978","title":"Powerdown Hadley Air Horn - 26in (660mm) | Rectangular Bell | Chrome Steel","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 26in (660mm) | Rectangular Bell | Chrome Steel\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00978 | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374270722,"sku":"H00978","price":404.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h00984b","title":"Powerdown Hadley Air Horn - 20in (508mm) | Rectangular Bell | Chrome Steel","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 20in (508mm) | Rectangular Bell | Chrome Steel\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H00984B | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374303490,"sku":"H00984B","price":354.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h02001a","title":"Powerdown Hadley Air Horn - 26in (660mm) | Rectangular Bell | Anodized Aluminium","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 26in (660mm) | Rectangular Bell | Anodized Aluminium\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H02001A | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374336258,"sku":"H02001A","price":264.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h02003a","title":"Powerdown Hadley Air Horn - 29in (736mm) | Rectangular Bell | Anodized Aluminium","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 29in (736mm) | Rectangular Bell | Anodized Aluminium\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H02003A | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374369026,"sku":"H02003A","price":274.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h02101a","title":"Powerdown Hadley Air Horn - 26in (660mm) | Rectangular Bell | Chrome Aluminium","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 26in (660mm) | Rectangular Bell | Chrome Aluminium\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H02101A | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374401794,"sku":"H02101A","price":339.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h02103a","title":"Powerdown Hadley Air Horn - 29in (736mm) | Rectangular Bell | Chrome Aluminium","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley Air Horn - 29in (736mm) | Rectangular Bell | Chrome Aluminium\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H02103A | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374434562,"sku":"H02103A","price":339.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h09318ac","title":"Powerdown Hadley E-tone Air Horn | Round Bell | ECE Emergency Certified","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley E-tone Air Horn | Round Bell | ECE Emergency Certified\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H09318AC | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374500098,"sku":"H09318AC","price":444.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h09321ac","title":"Powerdown Hadley E-tone Air Horn - 21in | Round Bell | ECE Emergency Certified","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley E-tone Air Horn - 21in | Round Bell | ECE Emergency Certified\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H09321AC | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374532866,"sku":"H09321AC","price":469.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h09324ac","title":"Powerdown Hadley E-tone Air Horn | Round Bell | ECE Emergency Certified","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Hadley E-tone Air Horn | Round Bell | ECE Emergency Certified\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H09324AC | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374598402,"sku":"H09324AC","price":469.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/air-horns_b2f09365-c3da-48ad-a8aa-b38edc023d8e.jpg?v=1781310691"},{"product_id":"h11477s","title":"Powerdown Air Horn Mounting Kit","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Air Horn Mounting Kit\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H11477S | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374762242,"sku":"H11477S","price":59.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/product-banner-general-03_8e8e1b77-61db-4b3f-9929-2b3f11d50cfd.jpg?v=1781310698"},{"product_id":"h13723s","title":"Powerdown Air Horn Support Mounting Kit","description":"\u003cp\u003e\u003cstrong\u003ePowerdown Air Horn Support Mounting Kit\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHadley is one of the largest OEM suppliers of air horns in North America, with products factory-fitted to many Kenworth, Peterbilt, Freightliner, Mack and Western Star trucks operating in Australia today. Powerdown is the official Hadley distributor for the Australian aftermarket, supplying genuine Hadley horns to the heavy transport industry through their national distribution network.\u003c\/p\u003e\u003cp\u003eAir horn output, tone and reliability matter in Australian heavy transport. A truck operating on outback highways and rural roads depends on its horn to warn other road users, animals and pedestrians at a distance. Hadley's reputation is built on consistent sound output, reliable operation in extreme heat and cold, and long service life in the demanding under-hood and roof-mounted environments of heavy trucks.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine Hadley product - OEM supplier to major North American truck manufacturers\u003c\/li\u003e\n\u003cli\u003ePowerdown is the official Australian Hadley aftermarket distributor\u003c\/li\u003e\n\u003cli\u003eConsistent and reliable sound output in Australian operating temperatures from -10 to +60 degrees C\u003c\/li\u003e\n\u003cli\u003eRust-resistant construction - chrome, anodized and painted finishes available\u003c\/li\u003e\n\u003cli\u003eRectangular bell and round bell configurations for different mounting and sound profile requirements\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 7\/16-24 UNF air fittings for straightforward installation\u003c\/li\u003e\n\u003cli\u003eLanyard valve kits (HPB450-3) and mounting hardware (H11477S, H13723S) available separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhen to replace:\u003c\/strong\u003e Reduced sound output, intermittent operation, corrosion on the bell or body affecting sound quality, or physical damage to the horn body. Air horns should be tested at every annual service and the internal reed\/diaphragm cleaned to maintain full output.\u003c\/p\u003e\u003cp\u003ePart number: H13723S | Vendor: Powerdown | Australian designed for heavy commercial vehicles | Technical enquiries: 02 4949 0000 | sales@powerdown.com.au\u003c\/p\u003e","brand":"Powerdown","offers":[{"title":"Default Title","offer_id":47983374827778,"sku":"H13723S","price":49.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/6529\/8231\/files\/product-banner-general-03_8e8e1b77-61db-4b3f-9929-2b3f11d50cfd.jpg?v=1781310698"}],"url":"https:\/\/www.directsuspensions.com.au\/collections\/air-horns.oembed","provider":"Direct Suspensions","version":"1.0","type":"link"}