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This Peterson Fluid Systems oil pressure gauge fitting places the gauge line connection where it's more accessible, using a 1/8" NPT engine port. The 90° adapter converts the engine's 1/8 NPT to a -4AN outlet, helping route the gauge line away from tight areas. It's a practical solution for relocating a pressure tap for easier installation and viewing.
Peterson Fluid Systems Fitting O/P 1/8 NPT x -4AN
