Quick view Sinister Diesel Sinister Diesel 01-15 Chevy Duramax CAT Filter Adapter - SD-CAT-DMAX Compare $129.99 $99.99 If you want to ensure maximum protection for your GM diesel engine's fuel system, then be sure to check out this upgraded Duramax fuel filter. Instead of a the factory fuel filter, the Sinister Diesel Duramax fuel filter and adapter kit comes with... Add to Cart Add to Cart