Sinister Diesel - SD-DC-FORD-94Coolant Reservoir (Degas) Cap for 1994-2016 Powerstroke 7.3L/6.0L/6.4L/6.7L.This new Coolant Reservoir Cap functions like a factory cap, but features custom Sinister...

Sinister Diesel - SD-DC-6.7P-17Coolant Reservoir (Degas) Cap for 2017-2019 Ford Powerstroke 6.7L.This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister...

Sinister Diesel - SD-COOLFIL-6.0-WCoolant Filtration System for 2003-2007 Ford Powerstroke 6.0L.Check out our new revision of the 6.0 Powerstroke Coolant Filtration System HERE, It doesn't matter if...

Sinister Diesel - SD-DEGAS-6.0Coolant Reservoir (Degas) for 2003-2007 Ford Powerstroke 6.0L.Sinister Diesel's new Coolant Reservoir is made from 6061 aircraft grade aluminum which is TIG welded and...

Sinister Diesel - SD-EOF-7.3Bypass Oil Filter System for 1999-2003 Ford Powerstroke 7.3L.Oil is the lifeblood of any engine, but heavy-duty trucks work even harder putting even more stress on the...

Sinister Diesel - SD-EOF-6.7C-13Bypass Oil Filter System for 2013-2018 Dodge Cummins 6.7L.The oil system in your engine is crucial to the trucks performance and life. Keeping your oil clean is what...

Sinister Diesel - SD-EOF-6.7C-07Bypass Oil Filter System for 2007.5-2012 Dodge Cummins 6.7L.The oil system in your engine is crucial to the truck's performance and life. Keeping your oil clean is...

Sinister Diesel - SD-ENGCOV-7.3Engine Cover for 1999-2003 Ford Powerstroke 7.3L.The Sinister Diesel engine cover for the 7.3L Powerstroke will help dress up the under-hood of your Superduty.This will...

Sinister Diesel - SD-COOLFIL-6.6-01-WSinister Diesel Coolant Filtration System for Chevy / GMC Duramax 2001-2010Add years of life to your diesel engine with this Coolant Filter Bypass System...

Sinister Diesel - SD-COOLFIL-6.6-11-WSinister Diesel Coolant Filtration System for Chevy / GMC Duramax 2011-2015Add years of life to your diesel engine with this Coolant Filter Bypass System...

Sinister Diesel - SD-COOLFIL-UNIVSinister Diesel Coolant Filtration System for Universal ApplicationsThe Sinister Diesel Universal Coolant Filter Kit is designed to extend the service life of your...

Sinister Diesel - SD-FUELBLK-6.0-ADJBlue Spring Kit with Adjustable Billet Spring Housing for 2003-2007 Ford Powerstroke 6.0L.The easy 30 minute install of the new updated "Blue Spring" will increase...