Sinister Diesel

Factory coolant hoses are prone to abrasions and cracking over time that could lead to cooling system failures, but this 01-05 Duramax 6.6L radiato...

Proper heat management from the cooling system is crucial on modified engines when you want trouble-free and reliable performance. The factory Dura...

Trust this Sinister Diesel Duramax head gasket to replace any blown or leaking OE head gasket on your GM Duramax engine. It works as a direct repla...

Add years of life to your diesel engine with this Coolant Filter Bypass System. Removing contaminates such as the casting sand and metal shavings m...

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. Inst...

CARB EO # PENDING; CURRENTLY NOT FOR SALE IN THE STATE OF CALIFORNIA

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 remo...

The more air you can get to your truck's engine the better and more efficiently it runs, and factory air intakes just can't stand up to the Siniste...

Help your truck to run better using this 03-07 Powerstroke 58v FICM from Sinister Diesel. This fuel injection control module or FICM has been desig...

Add some durability and style to your truck using these Sinister Diesel 03-07 Powerstroke billet cap! Unlike the OEM oil and filter caps, these won...