Hadley® H00977N - Ambassador™ Steel 29" and 26" Chrome Plated Rectangular Air Horn Kit

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In Stock (5)
Universal Fit
Fitment Notes:
  • Not Vehicle Specific
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Product Details

Universal Ambassador™ Steel 29" and 26" Chrome Plated Rectangular Air Horn Kit (H00977N) 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, heavy duty RV, and specialty vehicles. The Hadley Rectangular Bell horn is a heavy duty beauty that is the standard of its industry. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from industry-leading materials using up-to-date equipment, it ensures everlasting reliability and enduring value. This product is distinguished by total quality assurance, unsurpassed by anybody else.


Sound Pressure Level: 115 dB
Voltage: 12 V
Color: Silver
Fundamental Frequency: 210 Hz
Horn Valve Type: Tank Mount Solenoid


  • 26" H00978 Horn
  • 29" H00977 Horn
  • H00550B Tank mount solenoid valve
  • H13940S Pressure switch
  • H14212 Gauge
  • H12949S Toggle switch
  • H00850EC Compressor
  • H1311020S Tubing
  • H00751N Air tank
  • Parts bag


  • Legacy bell design
  • Two single rectangular bell shape horns
  • Shields, tubing and horn supports
  • Exclusively designed to meet the most demanding requirements
  • Straightforward installation
  • Guaranteed workmanship and material quality

To the casual observer, Hadley® has been a high-quality truck parts manufacturer since the mid 1940s. But once customers and people get to know us, they find that we’re much more; Hadley are a key solutions partner for Hadley customer with an unwavering commitment to “Your Vehicle, Your Company, Your Success”. The competitive difference at Hadley is found in Hadley people. Of course, that is what every company in every industry claims, however with Hadley that is what Hadley customers believe. Hadley have a reputation as the company with the experts who really understand what’s going on in the industry, and can put complicated market dynamics into a proper perspective. Hadley have been successful for 65-years because of the highly principled way in which Hadley operate.

Part Number:

Vehicle Fitment

This part is universal


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Hadley® H00977N - Ambassador™ Steel 29" and 26" Chrome Plated Rectangular Air Horn Kit

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