Sinister Diesel

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

Sinister Diesel - 17-22 Ford Powerstroke F-250/F-350 Charge Pipe Kit

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...

Add years of life to your diesel engine with this Coolant Filter Bypass System. Removing contaminates such as the casting sand and metal shavings means your engine's water pump, EGR cooler and oil...

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. Instead of a the factory fuel filter, the Sinister...

Sinister Diesel 01-16 GM Duramax 6.6L (Gray) CAT Fuel Filter Adapter

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits OEM or Sinister Diesel Coolant Reservoir for the 2001-2016 GM Duramax. It...

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits OEM or Sinister Diesel Coolant Reservoir for the 2001-2016 GM Duramax. It...

Sinister Manufacturing and Sinister Diesel have created an Exhaust Gas Recirculation (EGR) cooler that looks and fits exactly like your Powerstroke factory stock EGR, but we removed something...

Sinister Diesel 03-07 6.0L Powerstroke (Hexagon) Intake Elbow - Gray

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...