Features: 1.Applicable Models: Fuel filter bowl bypass kit is fit for 2500/3500 5.9L Cummins and for 2500/3500 6.7L Cummins. Please confirm whether your model is applicable before buying. 2.Main Function: Upgrade your fuel system without restricting the factory fuel filter. Once installed, the factory fuel return line can be used without any relocation or bending. 3.Provides Better Performance: The fuel filter delete bypass kit provides better combustion efficiency and engine performance for improved fuel economy. 4.Easy to Install: The fuel filter bowl bypass kit's simple construction requires no additional tools and can be easily and quickly installed or replaced, reducing installation costs and time. 5.Rugged Construction: Fuel filter delete tool kit is made of premium material, which is high hardness, sturdy and durable and has a long service life. Specification: Item Type: Fuel Filter Bowl Bypass Kit Material: Rubber + aluminum alloy Fitment: For 2500/3500 5.9L Cummins 2003-2007 For 2500/3500 6.7L Cummins 2007.5-2009 Note: Must be run with an upgraded fuel pump system (such as for Airdog or for FASS) or aftermarket fuel filter. Failure to do so will damage the engine.