Transmission and Adapter Package – Tremec TR-4050 with Cummins R2.8 Adapter

Transmission and Adapter Package – Tremec TR-4050 with Cummins R2.8 Adapter


Bell housing adapter kit combining the Cummins R2.8 and Tremec TR-4050.


Buy a complete transmission and adapter package and SAVE!

Now you can combine legendary Cummins power and reliability with a transmission designed for serious trail work! This package includes a NEW Tremec TR-4050 and the Quick Draw bellhousing adapter to bolt it to the venerable Cummins R2.8. Our TR-4050 to R2.8 adapter has been a popular seller for some time now, so we’ve put this package together to make the putting all the parts you need in one convenient place. Not that this is not a complete installation kit (engine and transmission mounts are not included for example) but includes the everything needed to bolt the TR4050 to the Cummins R2.8.

The Tremec TR-4050 is a major upgrade in the 4×4 and off road market.  It was showcased along with our adapter solution in the Ultimate Adventure 2019 Petersen’s Scout driven by Trent McGee and Christian Hazel.

Benefits of the TR-4050 Include:

  • A torque rating of 600 LB-FT (based on a 15,000 GVWR)
  • 6.16 first gear, all gears synchronized
  • 24.5″ long with 2.8 adapter bellhousing
  • Directly bolts to a number of Chrysler Dodge Jeep manual transfer case boxes

Tremec TR-4050 / Cummins R2.8 Package Includes:

  • NEW Tremec TR-4050 with shifter stub
  • Bell housing adapter for the Cummins R2.8
  • Complete clutch kit (off-the-shelf components that can be replaced at any auto parts store)
  • External slave cylinder
  • HD clutch fork, pivot ball, and throw out bearing
  • Modified Cummins flywheel with pilot bearing installed


Usually shipping will take 7 to 12 business days depending on location. Shipping must be to a business address or a freight terminal near the customer of QDB’s choice.  Delivery to a residence can be arranged at additional cost to the customer. California, Alaska, and Hawaii will have to pay additional freight regardless of delivery location because of distance.

Silver Sport Transmission provides this TR4050  warranty information.  Tremec is the contact for all warranty issues.

Additional Info:

We are a retailer for the Cummins R2.8 as well as the Tremec TR-4050 but is not a representative of either company therefore QDB does not have any affiliation with the manufacturing of those companies parts.

We are available by phone, text, and email to answer any questions regarding this kit and other Cummins swap conversations.   As always we offer both Military as well as check, cash, or wire discounts.  If you are looking for the complete engine Transmission kit CLICK HERE.

Promotional Bullet proof testing:

Here is a promotional video showing the toughness of our bell housings.  Some photos showing engine and transmission combination are for representation.


Additional information

Weight350 lbs
Dimensions48 × 40 × 28 in


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