The FASS Adjustable Diesel Fuel Lift Pump 165 GPH is a high-quality, high-performance diesel fuel lift pump designed specifically for Dodge Cummins 5.9 L engines from 1998.5 to 2004. With its whisper technology and adjustable fuel pressure of 1-20 PSI, this pump improves fuel flow and ensures optimal performance. It features a boost compensation port and a built-in fuel pressure gauge port, making it easy to monitor and adjust fuel pressure. Made in the USA and compatible with Dodge Ram 2500 and most Dodge Ram 3500 models, this pump is perfect for vehicles with moderate to extreme horsepower (600-900 HP).