Duramax CAT Fuel Filter adaptor Kit. This unit ensures maximum life of your fuel system. Fits all Duramax 6.6L 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). Anodized filter adapter for corrosion protection, includes necessary O-rings for installation.
-Also a replacement Cat 1R-0750 filters are approximately 50% the price of a stock GM filter.