Gauge Fittings 1/8 NPT Tee 2pk

The Gauge Fittings 1/8 NPT Tee 2pk by ALLSTAR PERFORMANCE is a critical plumbing component for any serious engine builder or tuner managing multiple gauge circuits. Whether you're running oil pressure, fuel pressure, coolant temperature, or boost sensors, these tee fittings allow you to branch a single NPT port into multiple gauge lines without sacrificing port availability on your block, manifold, or fuel rail. This two-pack ensures you have spares on hand and enough fittings to configure complex gauge layouts across multiple systems.

Each fitting features a true 1/8 inch NPT (National Pipe Thread) male connection that seals reliably under pressure when wrapped with quality thread tape or pipe sealant. The tee configuration provides three ports—one inlet and two outlets—allowing signal distribution without the need for external manifold blocks. ALLSTAR PERFORMANCE manufactures these from durable brass or steel to handle typical gauge pressures (0–150 PSI on fuel systems, 0–100 PSI on oil systems) and temperature fluctuations common in high-performance applications. The compact design minimizes installation footprint, critical when engine bay real estate is already claimed by turbochargers, intercoolers, or custom intake manifolds.

Mechanics and engine builders benefit most when setting up multi-point monitoring systems on forced-induction builds, race engines, or street performance platforms where redundant sensor feeds improve reliability and diagnostics. These fittings are compatible with any system using standard 1/8 NPT ports—turbocharged fuel systems, oil cooler circuits, coolant bypass lines, and boost-referenced fuel pressure regulators all benefit from this simple solution. Installation requires only an adjustable wrench and thread sealant; verify all connections are hand-tight before pressurizing to prevent leaks that could affect gauge accuracy or cause dangerous fluid loss.