160psi Adjustable Aluminum Fuel Pressure Regulator+Oil Filled Gauge (Black) Adjustable from 0 psi to 160 Maximum Fuel Pump Capacity; Readings Range from 0-8 kg/cm Improves Fuel Delivery Efficiency and Prevents Fuel Starvation for More Consistent Boost and Fuel Flow Designed to Maintain the Optimal Fuel Rail Pressure for High Performance/ Turbocharged Engine Delivers Vehicles' Highest Performance, with Long Life and Highly Reliable Operation Oil-Filled Design Fuel Pressure Gauge for Maximum and Consistent Measurement; Adjustable Fuel Pressure Regulator with 1:1 Ratio