Hadley

Hadley Horns & Accessories

  • Hadley® - Ambassador™ Aluminum 26" Chrome Rectangular Horn
    Hadley®Ambassador™ Aluminum 26" Chrome Rectangular Horn (H02101A)
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    # mpn4798653149
    Universal Ambassador™ Aluminum 26" Chrome Rectangular Horn (H02101A) by Hadley®. The classic Hadley Rectangular Bell is the most widely recognized truck air horn in the world. Made famous as original equipment on over-the-road trucks,...
    Rectangular bell shapeHorn support Included
    $280.64
  • Hadley® - Bully™ Stainless Steel Silver Replacement Diaphragm Kit
    Hadley®Bully™ Stainless Steel Silver Replacement Diaphragm Kit (H00910SS)
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    # mpn4515266201
    Universal Bully™ Stainless Steel Silver Replacement Diaphragm Kit (H00910SS) by Hadley®. Hadley is the worldwide leader in air horn systems. You'll see Hadley horns used as original equipment on over-the-road, tractor/trailer rigs....
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $22.17
  • Hadley® - Chrome Dual Air Horn Kit
    Hadley®Chrome Dual Air Horn Kit (H00962EA)
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    # mpn4654753879
    Universal Chrome Dual Air Horn Kit by Hadley®. The Hadley Bully Series Air Horn offers the traditional "Hadley Sound", a crystal clear, characteristic note that can be heard for up to a mile. This hallmark Hi/ Lo Tone comes from the...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $916.81
  • Hadley® - NGH™ Aluminum 23" Chrome Plated Rectangular Bell Horn
    Hadley®NGH™ Aluminum 23" Chrome Plated Rectangular Bell Horn (H02102A)
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    # mpn4646057433
    Universal NGH™ Aluminum 23" Chrome Plated Rectangular Bell Horn by Hadley®. The classic Hadley Rectangular Bell is the most widely recognized truck air horn in the world. Made famous as original equipment on over-the-road trucks,...
    Rectangular bell is the most widely recognized truck air horn in the worldFamous as original equipment on over the road trucks, heavy duty RV, and specialty vehicles
    $284.09
  • Hadley® - Nylon 1/4" 20' Yellow Tubing
    Hadley®Nylon 1/4" 20' Yellow Tubing (H1311020S)
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    # mpn4515266208
    Universal Nylon 1/4" 20' Yellow Tubing (H1311020S) by Hadley®. Hadley is the worldwide leader in air horn systems. You'll see Hadley horns used as original equipment on over-the-road, tractor/trailer rigs. And, when combined with a...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $30.63
  • Hadley® - 146 dB Black Under Hood Air Horn Kit
    Hadley®146 dB Black Under Hood Air Horn Kit (964H)
    0
    # mpn4822066653
    Universal 146 dB Black Under Hood Air Horn Kit by Hadley®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Hadley will...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $379.94
  • Hadley® - 3 Brass and Plastic Inserts
    Hadley®3 Brass and Plastic Inserts (HPB748-2)
    0
    # mpn4632028000
    Universal 3 Brass and Plastic Inserts by Hadley®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Hadley will last a...
    Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
    $4.08




Hadley is recognized nationally and internationally as a leading manufacturer or air horn systems. Hadley air horns are installed as original equipment in a variety of semi trucks. And when paired to Hadley air compressors, these horns are the most popular choice for many other types of vehicles including SUVs, pickups, RVs, motorcycles, and more. They produce a distinctive sound that makes your presence heard from far away, and that can’t be mistaken for anything else. This low, throaty tone became known as a characteristic sound of a big rig pounding the highways of America, and it is even called by many as the “sound of safety.”

The company traces its roots to Harold Hadley’s invention of a dual-trumpet horn powered by the R-134a refrigerant, which was aimed at increasing the safety of sailors on vessels. Referred to as the “Hadley Horn,” this product formed the foundation for the enterprise that Mr. Hadley established in 1945 in Toledo, Ohio. From the marine sector, the company quickly expanded into other industries including the automotive and truck markets. It is also a big player in the heavy-duty truck mirror business. Hadley mirrors are sold to OEMs and used by truck fleets throughout North America.

In addition to air horns, Hadley develops and manufactures a range of other air management parts and systems. Hadley valves have been around since 1963, first used in luxury car pneumatic suspension systems. The company’s valves and Ride Control Systems are the first choice of commercial vehicle makers and fleets these days. The award-winning SmartValve is an all-in-one truck-specific electronic height control system that made the life of truckers much easier. It eases and speeds up the drop-and-hook process eliminating the risk of injury to the driver, while also increasing fuel economy as it automatically changes the rig’s ride height depending on the speed.

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