CAT Fuel Filter Adapter W/ 1R-0749 Filter for 6.6l Duramax 2001-2016 Chevy GMC KBDP 2001-2016 Chevy/GMC 6.6l Duramax CAT Fuel Filter Adapter with Caterpillar 1R-0749 filter.Fits: 2001-2016 Chevy/GMC 6.6l Duramax LB7/LLY/LBZ/LMM/LML in 2500 & 3500 applications.A filter head spacer must be used with this filter.
