CAT Fuel Filter Adapter Conversion Kit for 2001-2016' Chevy/GMC Duramax Includes Bonus Billet Bleeder by FGT Motorsport Fits all 2001-2016 Chevy/GMC Duramax models including LB7/LLY/LBZ/LMM/LML Replace your stock fuel filter with an upgraded Cat 2 micron filter for superior filtration CNC machined from aircraft grade 6061 billet aluminum and anodized red for durability and aesthetics Includes billet aluminum spacer plate and mounting bolts to offset filter head from the OEM stock position. Includes both short bolts (2001-2010) and long bolts (2011+) to fit any year Duramax. Includes our popular billet bleeder screw for the fuel filter housing to replace the factory plastic one that is prone to breaking and stripping