#3 x 1/8 FPT Gauge Adapter 90 Deg

The #3 x 1/8 FPT Gauge Adapter 90 Deg from FRAGOLA is a precision elbow fitting designed for fuel pressure, oil pressure, and coolant temperature gauge installations on modified and stock engine platforms. This adapter serves as a critical bridge component when routing gauge lines at tight angles or when your OEM or custom gauge location doesn't align with existing port placements. Mechanics and engine builders rely on 90-degree adapters like this one to maintain proper gauge visibility while keeping line runs clean and avoiding unnecessary hose stress that can lead to leaks or gauge inaccuracy.

Constructed to FRAGOLA's exacting standards, this adapter features a compact 90-degree elbow design that minimizes pressure drop while accommodating tight engine bay layouts common in high-performance builds. The #3 SAE port size (threaded connection) pairs with 1/8-inch female pipe thread (FPT) to accept your gauge sender line, making it compatible with most aftermarket fuel, oil, and water temperature gauges on the market. The 90-degree configuration eliminates the need for multiple fittings and hose bends, reducing potential failure points and maintaining system integrity under sustained pressure cycling—critical when running tuned engines or monitoring boost-related parameters.

This adapter excels in engine bay modifications where space constraints demand compact routing solutions, from street performance vehicles to full race platforms. Whether you're retrofitting an electric fuel pump system, adding dual oil pressure monitoring, or consolidating gauge ports on a LS, small-block, or forced-induction build, the #3 x 1/8 FPT 90-degree elbow handles moderate pressure loads reliably. Installation is straightforward—thread the SAE port into your fuel block, manifold, or custom adapter plate, then attach your gauge sender line to the 1/8 FPT outlet. Verify all connections are tight and verify for leaks under operating pressure before driving.