Seeing the exact fuel pressure on your vehicle can mean the difference between extracting the most performance safely and expensive failures. AutoMeter's Mechanical Fuel Pressure Gauge will precisely measure your exact fuel pressure at levels of accuracy previously unheard of even in professional gauges. Designed for carbureted applications, a simple -4an connection makes installation easy. Don't take chances with your investment; a precise fuel pressure gauge could be the cheapest insurance you've ever bought. For the safety of the operator, a fuel pressure isolator is included.Features: Liquid filled design for superior resistance to shock, vibration, and the elements. Liquid dampened movement provides smooth pointer movement and extended service life in harsh environment applications. Specially designed user-operated vent equalizes gauge case pressure allowing for calibration adjustments in changing temperatures and barometric pressures. Includes bulb and socket assembly with red and green bulb covers Includes 4ft. Braided stainless steel hose, also requires #4 braided hose to connect isolator to fuel source Use of isolator allows gauge to be mounted inside vehicle Includes gauge mounting hardware and installation instructions Product Description: 2-5/8" Fuel Pressure Gauge, w/ Isolator, 0-15 PSI, Liquid Filled, Pro-CompPit Stop USA offers Auto Meter Pro-Comp Liquid Filled Fuel Pressure Gauge w/ Isolator - 2-5/8" - 0-15 PSI 5413 at low everyday prices. Be sure to check out all our products from Auto Meter including Auto Meter Fuel Pressure Gauges and Auto Meter Mechanical Fuel Pressure Gauges.