SunCoast 68RFE Rebuild Kit Category 0

Cummins 2007.5-2018

$1,845.00
SKU NWD-SC-68-0

The "RFE" stands for Rear-wheel drive Fully Electronic control. The RFE design was mostly noted in the new design to have 3 planetary sets for a 4-speed transmission in the  45RFE. 

  • Features
  • Videos
  • Instructions
  • Vehicle Fitment

Kit Includes the Following:

  • New Sonnax Smart Tech Overdrive Drum Assembly
  • New 68RFE Thrust Washer Kit
  • New 68RFE Thrust Bearing Kit
  • 68RFE Complete Gasket and Sealing Kit
  • 68RFE Spin-on Filter
  • 68RFE Pan Filter
  • 68RFE Underdrive and Overdrive piston set
  • Upgraded 2C Clutch Set
  • 68RFE Billet 2C Piston

The Smart Tech Drum

The factory overdrive clutches are at a high risk of failure when towing or installing aftermarket programmers, delete kits, or larger turbos. This is in large part to the fragile and thin (.034) single-sided clutches. When exposed to increased torque or higher temperatures, they will distort, causing additional clearance and uneven apply. This will always result in burnt clutches. These clutches in the overdrive housing are, by far, the weakest link in the 68RFE transmission design.

The Sonnax Smart Tech 68RFE overdrive drum addresses these issues. The new billet clutch housing holds a physically taller clutch pack, allowing the overdrive apply clutch area to increase 16%. In addition to the increased apply surface area, the thicker clutches and steels increase clutch steel mass by 28%, drastically improving the heat dissipation.

The new 68RFE overdrive clutch drum also comes with a top bolt-on plate to help eliminate clutch pack flexing and distortion that contribute to premature failure.

 

The 2C Piston

The factory molded piston is prone to uneven apply which leads to excessive heat in the clutches and steels creating premature failure. In this 68RFE transmission rebuild kit we replace the factory piston with a much improved billet piece that also allows for one additional clutch further increasing surface apply area.

These new 68RFE transmission rebuild kits are designed with the builder in mind, we offer from mild to wild depending on what your needs are.

Year Make Engine

2010-2018

Cummins

6.7L

2007.5-2009

 

Cummins

6.7L