Female Tee 1/8 NPT

The Female Tee 1/8 NPT is a brass adapter fitting purpose-built for fuel, water, and pneumatic line distribution in marine engines, racing fuel systems, and high-performance boating applications. As anyone who has spent time troubleshooting fuel or cooling system leaks knows, a quality tee fitting is essential infrastructure—it allows you to split a single supply line into multiple branches without sacrificing integrity. This QUICKCAR RACING PRODUCTS adapter serves dual roles: it's compact enough for tight engine bay installations yet robust enough to handle continuous pressure cycling in salt-water and freshwater environments.

Constructed from solid brass with natural finish, the Female Tee 1/8 NPT features three female 1/8 inch NPT (National Pipe Thread) ports arranged in a true tee configuration—one inlet and two outlets, or any combination depending on your manifold design. NPT is the industry standard for fuel and fluid systems because the tapered thread creates a metal-to-metal seal that improves with pressure, eliminating the need for additional sealant tape in high-vibration environments. Brass resists corrosion in marine conditions better than steel, and its natural finish allows you to verify thread integrity visually during installation. At just 0.1 lbs, this fitting adds negligible weight while providing years of dependable service.

Boaters running dual-carburetor fuel systems, custom cooling loops, or pressurized water distribution benefit most from this adapter—especially in restoration or modification work where OEM manifolds don't accommodate your new layout. Installation is straightforward: wrap all external threads with PTFE thread seal tape, hand-tighten, then use a wrench to snug each connection firmly without over-torquing brass. The 1/8 NPT size matches most standard fuel and coolant line fittings found on marine gasoline and diesel engines. Compatible with hose diameters from 3/16 inch to 1/4 inch tubing, this tee integrates seamlessly into existing systems or custom plumbing projects.