#3 Male to 1/8 NPT Male Run Tee

The #3 Male to 1/8 NPT Male Run Tee from XRP-XTREME RACING PROD. is a precision-engineered adapter fitting designed for builders and mechanics who demand reliability in high-performance fuel and coolant systems. This run tee serves as a critical junction point in custom plumbing applications, allowing a single inlet line to split into two outlet lines while maintaining structural integrity under pressure. Built for serious automotive enthusiasts tackling fuel system upgrades, turbo installations, or engine bay modifications, this adapter combines compact design with robust construction to handle demanding street and track environments.

Manufactured from lightweight aluminum and finished in blue anodized coating, the #3 Male to 1/8 NPT Male Run Tee provides excellent corrosion resistance and thermal stability—critical factors when routing fluid lines near engine heat sources. The tee features one 1/8 inch NPT (National Pipe Thread) male port for gauge sensors, fuel pressure regulators, or distribution blocks, paired with two #3 AN (Army/Navy) male ports that accommodate standard -3 hose fittings common in modern fuel and coolant systems. NPT threads create a tapered seal without additional sealant, while AN connections deliver leak-free performance through precise machining tolerances. The compact 2.75 x 0.95 x 3.65 inch footprint allows installation in tight engine bays where space efficiency matters.

This adapter excels in fuel distribution manifolds, coolant bypass circuits, and sensor mounting applications where multiple connection points converge into a single assembly. Mechanics and hot rodders frequently employ run tees when upgrading to fuel injection, installing auxiliary cooling systems, or adding fuel pressure and temperature monitoring to carbureted or EFI engines. Verify hose line size compatibility—#3 AN fittings pair with -3 (3/16-inch ID) hose—and confirm that NPT port diameter matches your sensor or accessory thread size before installation. XRP's reputation for precision manufacturing ensures this fitting maintains integrity across sustained high-pressure operation, making it an ideal choice for both street performance builds and competition applications.