Oil Pressure Gauge Adapter - Engine Parts- EVO - Vulcanworks.net - American Made Parts for Harley Davidson Motorcycles
Ray's Chevy Restoration Site -- Chevy Mechanical Oil Pressure Gauge Information
Fuel and oil pressure gauge fitting
Oil Pressure Gauge Tubing Kit
Amazon.com: 60 PSI Oil Pressure Gauge with Adapter Fitting for Shovelhead & Big Twin EVO : Automotive
Amazon.com: 1/8 NPT Oil Pressure Sensor Tee Adapters Turbo Supply Feed Line Gauge Hose T Stainless Steel Fitting 1/8 NPT Female to 1/8 NPT Male with 1/8 NPT Side Port : Automotive