Kleinn HK3 Complete Set of Fittings

Equip your vehicle's air horn installation with the Kleinn FIT34 complete plumbing and fitting kit, specifically engineered to contain all the essential airline fittings utilized in HK2, HK2-1, HK3, and HK3-1 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 2131 130 PSI automatic pressure switch, a part number 52155 155 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.

Additional Information

Kleinn Model FIT34 Complete Fitting Kit - Fits Kleinn Universal HK3 through HK4 kits

Part Type

Air Horn Fitting

• 2131 Pressure Switch
• 318BK Horn Button
• 51414L 1/4" Airline Compression fitting
• 52155 Safety Valve
• 52835 Tank Drain Valve
• Juice Thread Sealant

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Fittings, Complete set of fittings for a Kleinn HK3 or HK4 Problaster Horn Kit