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Kleinn Air Horns

Kleinn Sealed Tank Mount Pressure Switch/ 1/4In M NPT/ 90 PSI On/ 120 PSI Off

Kleinn Sealed Tank Mount Pressure Switch/ 1/4In M NPT/ 90 PSI On/ 120 PSI Off

$49.99 USD
$49.99 USD
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Shipping & returns

Orders over $99 ship free in the lower 48. Most in-stock gear leaves the warehouse the next business day. Wrong fitment? Send it back within 30 days — we'll help you find the part that does fit.

Fitment & build help

Not sure if this fits your platform? Tell us your year, make, model, and trim — we'll confirm before you order. For bigger builds, we'll help you plan the full stack.

Warranty

Every product on this site ships through authorized channels with full manufacturer warranty. If something breaks in normal use, we'll help you get it resolved.

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The Kleinn Model 2121 is a premium sealed pressure switch engineered to automate your onboard air system by keeping tank pressure regulated between 90 PSI and 120 PSI. Optimized for use with the 6260RC air compressor, this heavy-duty switch features a standard 5% PSI variance tolerance and operates on 12-volt ignition power to signal a required SPDT 30-amp relay (Kleinn Model 340), safely turning the compressor on and off automatically. For maximum system protection, it is highly recommended to pair this switch with a 145 PSI safety relief valve (SKU 52145) installed on the air tank; in the event of a pressure switch failure, the safety valve will release a burst of air to alert you to cut power to the compressor, preventing a costly burn-out until the switch can be replaced.

  • Free shipping over $99

    Orders over $99 ship free in the lower 48. Most in-stock gear leaves the warehouse the next business day.

  • Wrong fitment? We make it right.

    If a part doesn't fit your platform the way it should, send it back. We handle the return and find you the part that does.

  • Authorized dealer support

    Every product moves through proper channels. Full manufacturer warranty, real tech support — no gray-market headaches.