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The Kleinn Tundra train horn and onboard air system for 2007–2021 is a direct‑fit, 100% bolt‑on kit that pairs the Model 230 triple train horn with a heavy‑duty waterproof Kleinn compressor and 3‑gallon tank on a Made‑in‑USA bracket for a no‑drill install. The boxed system includes a quick‑connect inflator with locking air chuck, remote mount and storage bag, plus all necessary air line, wiring and hardware; a valve upgrade is offered to boost horn volume.
Kleinn 07-21 Toyota Tundra Onboard Air System w/ Model 230 Horns
