Kleinn Air Horns · New
Kleinn Sealed 40-Amp/ 5-Post/ SPDT Relay (12-volt)
MPN 340 · Store SKU kle340
Supplier stock checked 11/7/2026, 4:21:57 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The Kleinn Model 340 is a premium, universal standard automotive electrical relay engineered to provide safe, reliable, and high-capacity power switching within your high-pressure onboard air system. Featuring a heavy-duty, Single Pole Double Throw (SPDT) 5-prong configuration enclosed in a protective black ABS plastic housing, this relay is designed to withstand the demanding conditions of automotive engine bays and chassis environments. Rated for a robust 30 Amps of continuous current and up to 40 Amps momentarily, it acts as a crucial safety barrier—allowing a low-amperage dash switch to cleanly trigger high-draw pneumatic components, such as your air compressor or high-performance solenoid valves, while completely safeguarding your vehicle's delicate factory wiring. Model 340 - 30/40 amp max SPDT 12-Volt Automotive Relay
Manufacturer fitment & guides
Check 340 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
