Sinister Diesel

Patent Pending, CARB EO # PENDING; CURRENTLY NOT FOR SALE IN THE STATE OF CALIFORNIA Sinister Diesel Cold Air Intake for 2013+ Dodge/Ram Cummins 6.7L - Tuning Required 2013-2018 Dodge/Ram 2500;3500 6...

The oil system in your engine is crucial to the trucks performance and life. Keeping your oil clean is what it all comes down to and this 6.7L Cummins Oil Bypass Kit from Sinister Diesel is designed...

CURRENTLY NOT FOR SALE IN THE STATE OF CALIFORNIA Cold Air Intake for 2019 Plus Dodge/RAM Cummins 6.7L 2019-2020 Dodge/Ram 2500;3500 6.7L Fitment: Ram 2500 Big Horn 2019 Ram 2500 Big Horn 2020 Ram...

The Sinister Diesel 5.9 Cummins CAT fuel filter kit allows you to install a 2 micron CAT fuel filter for superior fuel cleaning without any major modifications., NOTE: This kit is made for 2004...

For use with aftermarket filtration system such as Fass or Air Dog. The perfect addition to your upgraded fuel system, get rid of unnecessary fuel restriction with the Sinister Fuel Filter Bowl...

Even on freshly rebuilt, or brand new engines, the coolant is usually contaminated with microscopic particles including casting sand leftover from the manufacturing process, metal shavings, rust, and...

CARB EO # PENDING; CURRENTLY NOT FOR SALE IN THE STATE OF CALIFORNIA , Note: This part is in high demand and may require a build time of 6 to 8 weeks. If you need this part sooner, please call us at...

Patent Pending, CARB EO # PENDING; CURRENTLY NOT FOR SALE IN THE STATE OF CALIFORNIA Sinister Diesel Cold Air Intake for 2007.5-2012 Dodge/Ram Cummins 6.7L Q: I know it is stronger and looks better,...

The Sinister Diesel Billet Fuel Plug/Cap for the 2013-2017 Cummins is a stylish and durable option to keep dirt and moisture from entering your fuel tank. The factory uses a small, flimsy plastic...

The oil system in your engine is crucial to the trucks performance and life. Keeping your oil clean is what it all comes down to and this 6.7L Cummins Oil Bypass Kit from Sinister Diesel is designed...

This new Sinister Diesel Oil Fill Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits 1989-1998 Cummins 5.9L 12V engines. It is made from CNC machined, solid...

Keep the oil clean in your truck's engine using this Cummins bypass oil filter system from Sinister Diesel. This setup does a better job than the OE oil system , keeping everything in your engine...

Patent Pending, CARB EO # PENDING; CURRENTLY NOT FOR SALE IN THE STATE OF CALIFORNIA, Note: This part is in high demand and may require a build time of 1 to 2 weeks. If you need this part sooner,...

The 5.9L Cummins Coolant Filter Kit from Sinister Diesel is designed to extend the service life of your 2003-2007 Dodge 2500 or 3500 diesel by removing contaminants that can damage your engine.Even...