Kleinn 1/2In OD Tubing 1/4In M NPT Straight Compression Fitting

The Kleinn Model 51214 is a premium pneumatic compression fitting engineered to establish a secure, leak-free connection between your rigid air lines and system components within a high-pressure onboard air system. Featuring a heavy-duty, corrosion-resistant solid brass construction built to withstand demanding automotive and outdoor environments, this universal plumbing component is designed with a 1/4" Male NPT threaded end on one side and a 1/2" O.D. compression tube connection on the other. Perfect for high-demand setups, it allows you to cleanly adapt oversized 1/2" air lines directly into your air tank, compressor, or solenoid valves, ensuring maximum airflow and optimal reliability for your air horns and onboard accessories.

Part Type

Compression Fitting

• 1/2" Airline Compression
• 1/4" Male NPT Fitting
• Brass construction

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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

Compression Fittings, 1/4 in.-NPT Male Threads, Straight, for 1/2 in. Outside Diameter Tubing, Brass, Natural, Each

Kleinn offers compression fittings in a variety of sizes, styles, and configurations for all your air system needs. These brass fittings are compatible with air horns, air compressors, air tanks, and other pneumatic accessories. Find out why Kleinn Automotive Accessories are a leader in air horn and related pneumatic accessories for cars, trucks, SUVs, and everything else with a 12- or 24-volt power source when you order the Kleinn compression fittings best suited for your application.