Features: 152mm/2in automobile gauge, used to measure the oil pressure of car. 2Digital display with black dial and blue LED, also has red warning light. 3High accuracy, this gauge has a measuring range of 0?150PSI, simple to operate. 4Comes with an oil pressure sensor, which features NPT 1/8in mounting thread. 5Premium plastic and aluminum alloy materials, rugged, anti-corrsion and durable. Item Type: Oil Pressure Gauge Material: Plastic + Aluminum Alloy Diameter Size: Approx. 2in (52mm) Input Voltage: DC 12V Input Current: 0.3A (Maximum) Unit: PSI Measurement Range: 0-150PSI Warning Point: 10.5PSI Sensor Mounting Thread: NPT 1/ 8in Color: Blue Digital Readout How to Install: 1. Gauge may be mounted in 2in/52mm dia holes or in gauge custom mounted panels. Secure gauge with mounting clamps supplied. 2. Drill 3/8 dia .holes and install rubber grommets where pressure or vacuum line passes through sheet mental such as firewall. 3. Attach nylon pressure line to fitting on back of gauge using adaptor ,ferrule ,and compression nut .route line through grommets to engine compartment .connect line to pressure port on engine by using 1/8 adaptor ferrule and compression nut for turbo and prossure gauge or 1/8 adaptor and fitting for vacuum gauge. 4. Start engine and thoroughly check installation for leaks. Twist in light socket assembly and connect one wire(yellow) to dash lighting circut or other 12v power source and the other wire(black) to a good ground. 1 x Oil Pressure Gauge 1 x Connection Line&nbsp 1 x Oil Pressure Sensor&nbsp 1 x Manual&nbsp&nbsp