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(888) 312-8812 Login SignupThe Hadley Air Horn is used on vehicles to produce an audible alert powered by compressed air. Once connected to the air system, the horn emits a low-tone sound when activated, serving as a warning signal in traffic or work environments. The Hadley H00977TP mounts externally, where sound projection is unobstructed by surrounding components. Its rectangular shape and extended length contribute to how the sound is directed forward. The horn kit format includes the necessary components to create a complete signaling setup rather than a single sound-producing unit.
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Headquartered in Grandville, MI, Hadley® designs and manufactures valves, air horns, mirrors, and height control systems for heavy duty, commercial, and recreational vehicles. Hadley air horns are a particular favorite amongst truckers due to their signature low, throaty sound that's discernible even at long distances. The company also manufactures the SmartValve line of electronic height control system components, whose simplified and compact design helps reduce injuries and downtime during maintenance and improve fuel economy. All Hadley products are built and assembled in state-of-the-art facilities with four ISO certifications via ANAF to ensure compliance with international environmental, safety, and quality standards.
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