One of the worst scenarios a car owner can face is a lack of oil pressure. Knowing the precise pressure is critical to longevity, performance & reliability. Heck, even for peace of mind. The Autometer Muscle 2-1/16" Oil Pressure Gauge 0-100PSI Mechanical the most advanced bourdon tube meter movement available to deliver accurately whilst still being durable. In addition, a simple 1/8" NPT connection makes the installation easy.SPECIFICATIONS-Modern White LED Through-The-Dial Lighting Provides Clear Visibility During Night Use-Autometer Instruments Provide Trusted Accuracy While Being Simple to Install-No Electrical System Required for Gauge Operation - Compatible with Every Street or Race Vehicle-Mechanical Movements Provide Accuracy & Durability Even in Harsh Environments-Gauge Kit Includes 1/8" Nylon Line, 1/8" NPT Compression Fittings, 1/4" NPT Adapter, Mounting Hardware & Detailed Instructions for Installation-Adapter/Fitting: 1/8" Male to 1/8" Compression Fitting, 1/8" NPT Female to 1/8" Compression Fitting, 1/8" NPT to 1/4" NPT Bushing-Tubing: 10ft Nylon Tubing-Mounting Hardware: 2230-Size: 2-1/16" (52.4mm)-Type: Mechanical-Range: 0-100 PSI-Lighting: LED