Sinister Diesel

Sinister 2003-2007 Powerstroke 6.0L Titanium Exhaust Manifold Studs

Sinister 2023+ Ford F250/350/450 6.7L Bed Step Delete - (Long Bed)

Sinister 2023+ Ford F250/350/450 6.7L Bed Step Delete - (Short Bed)

The Sinister Diesel Charge Pipe Kit for the Powerstroke 6.7L replaces the stock, restrictive piping that connects the turbocharger to your intercooler. This upgraded pipe is larger in diameter and...

The set contains gaskets for the exhaust manifold, up pipe, upper and lower valve cover, along with valve cover grommets, valve seals, and turbo drain seals., Each Sinister Diesel Heads Up Kit for...

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 radiator pipe kit is the perfect way to ensure that your...

Proper heat management from the cooling system is crucial on modified engines when you want trouble-free and reliable performance. The factory Duramax water pump is known to slip under load and can...

Sinister Diesel 250 Amp OEM alternators are trusted by many Diesel repair shops and stores to be the fix all solution for the GM Duramax 6.6L alternator failures which may cause electronics failures...

Sinister Diesel 320 Amp OEM alternators are trusted by many Diesel repair shops and stores to be the fix all solution for the GM Duramax 6.6L alternator failures which may cause electronics failures...

When the stock head gaskets in your truck are blown or leaky, a Sinister Diesel Duramax head gasket is the perfect way to get everything running normal again. You'll find these steel head gaskets are...

Replace your leaky or blown head gasket with this high-quality Sinister Diesel Duramax head gasket. It's a direct replacement for the OE head gasket, but features an extra-durable design which...

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 replacement for all Duramax LB7, LLY, LBZ, and LMM 2001...

If your diesel truck's head gaskets are either blown or leaking, replace them with this high-quality Sinister Diesel Duramax head gasket. A heavy-duty stainless steel design ensures the kind of seal...

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 wIt'stand the extreme...

Swap out any leaking or blown head gasket in your Duramax engine using this Sinister Diesel Duramax head gasket. It works as a direct replacement for OE head gaskets in 2001 to 2010 GM Duramax LB7,...