Looking to get the most out of your Cummins diesel engine? Then you need the Airdog II-4G A6SPBD253 100 GPH Fuel System. This fuel system is designed specifically for 5.9 Cummins engines from 1998.5 to 2004, and is preset at 15-17 PSI to support stock to 500HP setups. With a flow rate of 100 gallons per hour, it'll give your engine the boost it needs for improved throttle response, smoother idle and acceleration. Plus, it's the quietest fuel system in the diesel market, so you can enjoy all the benefits without any unwanted noise. Get your Airdog II-4G A6SPBD253 100 GPH Fuel System today and feel the benefits.