Sinister Diesel - Transmission

With modifications, modern high-performance Cummins, Powerstroke, and Duramax engines can make over 1500 lb-ft of torque which is far beyond the original factory specifications. But all the horsepower and torque is useless if you don’t have a diesel transmission that can tame the beast under the hood and send its power to the wheels where it can work for you.

Eliminate Weak Links in Your Drivetrain

A diesel transmission is the weak link in any high-performance build. The incredible raw power and torque produced by a modified Cummins, Powerstroke, or Duramax engine in many cases is too much for the intricate and complex machinery inside a stock unit. For many years, the mission of Sinister Diesel has been uncompromising diesel performance and that extends past horsepower and torque numbers and into durability, drivability, and usability. Check out the categories below to find transmission cooling kits and deep pans to help control heat and add life to your diesel transmission. You’ll also find torque converters, clutch kits, shift controllers, and performance valve bodies to prevent transmission slip and make sure all that power gets to the ground.

Trusted Brands from Sinister Diesel

We stock the very best in diesel performance transmission parts from trusted brands like aFe, ARP, ATS Diesel, Banks Power, BD Diesel, Bully Dog, Firepunk, Mag-Hytec, Merchant Automotive, Mishimoto, PPE, Suncoast Converters, and Valair. We’ll make sure that you find the components you need to build a powertrain that you can rely on. And if you’d like to talk to an expert about selecting the right diesel transmission parts for your application, we’re here to help! You can easily reach one of our knowledgeable sales staff by phone, email, or through the convenient live chat at the bottom of every page!

Select a Sub-Category


Transmission Featured Products

Items 1-1 of 1
Price: $76.05

Items 1-1 of 1