Begin Your Build Here:
We’ll show you a personalized parts catalog.
- AS69RC (2013 to Present)
- AS68RC (2007.5 to 2012)
- 68RFE (2007.5 to Present)
- 48RE (2003 to 2007)
- 47RE (1996 to 2003)
- Allison 10L1000 (2020 to Present)
- Allison 1000/2000 Series (2001 to 2019)
- 6L50 (2016 to 2020)
- 10R140 (2020 to Present)
- 6R140 (2011 to 2019)
- 5R110 (2003.5 to 2010)
- 4R100 (1997.5 to 2003)
- E40D (1989 to 1997)
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
- Transmissions
- Torque Converters
- Rebuild Kits
- Valve Bodies
- Parts
Transmissions 101: Unlock Your Drivetrain.
Become an expert in minutes!

Allison 10L1000 Transmission • Problems & Solutions
February 21, 2021
This is a complete overview and analysis of the problems that plague the new 2020 and above 10-Speed Allison Transmission found in the new Heavy Duty DuraMax diesel trucks! Read more to discover the problems and solutions of this transmission.
Read more
Torque Multiplication Factor (TMF) • The All-In-One Guide
February 09, 2021
What is a Torque Multiplication Factor (TMF) and how does it apply to me? Understanding TMF is the easiest way to prevent certain transmission failure in any application. After reading this Transmissions 101 Installment, you should be able to understand, calculate and apply your own TMF easily!
Read more
68RFE Transmission • Problems & Solutions
January 16, 2021
Welcome to the All-In-One Guide to the 68RFE. In this installment of our Transmissions 101 series, we will be analyzing all of the problems, solutions and upgrades necessary to make a happy, healthy 68RFE transmission.
Read more
68RFE vs Aisin • The Full Length In-Depth Comparison
January 14, 2021
68RFE or Aisin? Which is better and why? Become an expert in minutes with this installment of our Transmissions 101 series! This easy to read guide with pictures and data to learn everything you need to know.
Read more