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BIG-RIG AUTHORITY
Bring the unmistakable thunder of a Mack or Peterbilt to your Rig. Whether performing a fresh build or upgrading your current roof-mount horns, Model 401 delivers that iconic semi-truck roar that demands immediate respect. Precision-engineered for high-pressure performance, these horns thrive between 120–175 PSI to ensure maximum acoustic impact every time you hit the valve.
SLEEK DESIGN, MASSIVE PRESENCE
Experience a seamless, factory-professional look with the Kleinn 401. Its clever underside air inlet hides all plumbing, providing a clean roofline free of exposed tubing. These chrome-plated stainless-steel trumpets are built for the long haul, offering aerodynamic styling without sacrificing volume. Whether you’re running a classic manual pull-valve or a modern 12-volt solenoid, the 401 is the ultimate choice for versatile, classic Big Rig ROAR!
THE VERDICT: The definitive jump into authentic semi-truck acoustics. The Model 401 delivers genuine over-the-road authority and massive, multi-tonal projection for heavy-duty commercial haulers, custom service rigs, and overland platforms alike.
This air horn requires a compressed air system to operate, with an optimal cut-off pressure between 120–175 PSI. When selecting your setup, remember the Kleinn rule of thumb: higher pressure delivers a louder blast, while a larger tank ensures a longer blast.
COMPATIBLE KLEINN COMPRESSOR LINK SYSTEMS
MODEL 401 SPECIFICATIONS:
| Model 401 Chrome Roof Mount Dual Air Horns | |
|---|---|
| Warranty | 1-Year Warranty |
| Construction | Chrome-Plated Stainless Steel |
| Manual Horn Activation (Sold Separately) | P/N 310 chain style or 311 lanyard style |
| 12-Volt Horn Activation (Sold Separately) | P/N- 307 lt-duty or VX6003 hvy-duty |
| Min- Max Pressure | 120 - 175 PSI |
| Output (dB) @ 150 PSI | 152.1 dB |
| Dimensions | 15.5” L x 7.5” W x 4.5” H |
| Minimum Tank Size | 1.5 Gallon |
| Airline Input Size / Fitting Pack Part # | ¼” Airline / 330 roof mount fitting pack |
| Shipping Weight | 5 lbs |
INSTALLATION INSTRUCTION LINKS:
Free U.S. standard shipping on qualifying orders $199+. Special order and made-to-order items can't be cancelled or refunded once ordered.
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We carry 750,000+ parts, so we can probably still get it. Check the spelling, try the part number, or ask us.
Request this part Text us (833) 691-5717