Duramax CAT Fuel Filter 2 Micron Upgrade/Adapter Kit Duramax Cat Fuel Filter Adapter. Ensures maximum life out of your fuel system! Replaces inefficient 6 micron stock filter with high efficiency 2 micron Cat filter (1R-0750) Adapter Only $79 Adapter/Filter Combo $99 Replacement Cat 1r-0750 Filter $19 Replacement Adapter O-ring Kit $9. Duramax Cat Filter Adapter - YouTube Click to view on Bing3:39Jason explains how to install a Cat Filter Adapter for a Duramax. Duramax CAT Fuel Filter Adapter 2001-2015 LB7/LLY/LBZ/LMM/LML (Full Install) - Duration: 10:52.Author: AlligatorDieselViews: 57K Duramax CAT Fuel Filter Adapter 2001-2015 LB7/LLY/LBZ/LMM Click to view on Bing10:52sinister diesel cat fuel filter adapter gm duramax 2001-2015 lb7/lly/lbz/lmm/lml The Sinister Diesel CAT fuel filter adapter allows you to install a 2 micron CAT fuel filter without any majorAuthor: Truck MasterViews: 84K 2001-2016 Duramax CAT Fuel Filter Adapter & 1R-0750 CAT filter 2001-2016 GM 6 Duramax LB7. LLY, LBZ, LML, LMM. CAT fuel filter Adapter kit & 1R-0750 Cat Filter Duramax CAT Fuel Filter adaptor Kit. This unit ensures maximum life of your fuel system. Fits all Duramax 6 2001-2016 It is easy to install and NO modifications are required! Replaces inefficient 6 micron stock filter with high efficiency 2 micron Cat filter (1R-0750). Duramax CAT Oil Filter Conversion Kit – MDDP Every factory and factory replacement Duramax filter will have this bypass valve. The CAT 1R-1807 filter does not have this valve as it is a true flow filter. This valve sits at the bottom of filter casing. When the filter cannot flow enough oil through it, the value opens up and sends dirty, unfiltered, liquid sandpaper through your engine.