P/C #12 Str Swivel Coupler

The Russell P/C #12 Str Swivel Coupler (RUS640033) is a straight adapter fitting engineered for high-pressure fuel, oil, and coolant systems in performance and modified vehicles. Built for automotive professionals and enthusiasts who demand reliability in custom fuel injection setups, turbo plumbing, and transmission cooler lines, this adapter bridges two 12 AN female swivel ports seamlessly. Whether you're building a fuel system from scratch or integrating aftermarket components, this coupler eliminates the need for separate male and female fittings, streamlining your installation and reducing potential leak points.

Machined from aluminum and finished in black anodize, the P/C #12 Str Swivel Coupler delivers both corrosion resistance and lightweight durability—critical for underhood environments and fuel system longevity. The dual female swivel design accommodates hose ends with orb seals or swivel compression fittings, allowing for precise angular alignment without thread strain, a feature that prevents cross-threading and galling during assembly. Russell's precision manufacturing ensures tight tolerances and consistent sealing, minimizing the risk of catastrophic leaks at high fuel pressures or elevated temperatures in turbocharged and supercharged applications. Weighing just 0.18 lbs, this adapter introduces negligible mass while maintaining structural integrity under continuous duty.

Mechanics and fabricators building custom fuel rails, remote oil filtration systems, and intercooler loops will find this fitting indispensable for systems operating in the 10–20 psi range typical of street and mild competition builds. The swivel design excels in tight engine bays where fixed straight fittings cannot accommodate hose routing angles, making it particularly valuable for LS engine swaps, vintage car restorations, and compact turbocharged platforms. Installation is straightforward: apply appropriate thread sealant to the 12 AN male threads on your hose ends, thread into both swivel ports, and tighten securely—no special tools required beyond a standard AN wrench.