Sinister Diesel Semi-Truck Engine

Bypass Oil Filter System by Sinister Diesel®. 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. The Sinister oil filter kit is here to do just that. This...

Black Diamond™ Cylinder Head Gasket by Sinister Diesel®. Replace a leaky, blown head gasket on your Duramax diesel engine with this Sinister Diesel Duramax head gasket. Thanks to a multi-layer steel construction, this gasket will...

Driver Side Black Diamond Cylinder Head Gasket by Sinister Diesel®. Each replacement gasket features an extra heavy duty seal for each cylinder to ensure total combustion chamber seal that high compression turbocharged diesel engines...

Powerstroke Black Diamond Cylinder Head Gasket by Sinister Diesel®. Sinister Diesel has now perfected the multi-layer steel head gasket Replace a leaky, blown head gasket on your Duramax diesel engine with this Sinister Diesel Duramax...

By-Pass Oil Filter System by Sinister Diesel®. 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. The Sinister oil filter kit is here to do just that. This...

By-Pass Oil Filter System (SD-EOF-5.9-06) by Sinister Diesel®. Keeping your oil clean is what it all comes down to. The Sinister oil filter kit is here to do just that. This adds the best oil filter available on the market with our...