Kleinn Air Horns · New
Kleinn HK5 Complete Set of Fittings
MPN FIT56 · Store SKU kleFIT56
Supplier stock checked 11/7/2026, 7:11:19 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
Equip your vehicle's air horn installation with the Kleinn FIT56 complete plumbing and fitting kit, specifically engineered to contain all the essential airline fittings utilized in HK5 and HK6 ProBlaster horn systems. Engineered for universal application and maximum pneumatic reliability, this premium component package includes a comprehensive set of heavy-duty 1/4-inch NPT brass fittings to ensure a leak-free setup under high pressure. The high-performance kit comes equipped with a part number 2151 145 PSI automatic pressure switch, a part number 52175 175 PSI safety relief valve, a part number 52835 air tank drain cock, and a 51414L elbow compression fitting to streamline your airline routing. Designed for a clean, professional, and comprehensive installation, this complete package also includes a part number 318-BK black momentary horn push-button switch alongside a vial of Kleinn's exclusive Juice-1 liquid thread sealant, providing everything needed to service, upgrade, or finish your onboard air system right out of the box. Kleinn Model FIT56 Complete Fitting Kit - Fits Kleinn Universal HK5 through HK6 kits Model FIT56 Complete Fitting Kit - Fits Kleinn Universal HK5 through HK6 kits
Manufacturer fitment & guides
Check FIT56 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
