Fits '11-'17 Allison 4x4 Transmissions. This support can keep your Allison four wheel drive housing from cracking in the event of a driveline vibration (bad u joint, dented or bent driveshaft).
Piece of Mind:
Drive line vibrations from a bad u-joint or other factors can put stress on the 4x4 transmission housing and cause it to crack. Replacing a housing can cost over $1000. Installing a rear housing support can keep your four wheel drive housing from cracking
Built to last:
Our Rear Housing Supports are fabricated in house right here at Merchant Automotive. Using 7/8 .120 wall DOM mild steel tubing for maximum support.
Easy to Install::
The support installs using the factory bolts. This brace can be easily installed in the driveway or garage .
X-Fer Case Support, February 1, 2018 By Anthony (Willow Park, TX)(Verified)
I have put 2 of these on my personal trucks, an 05 2500HD and my current 2013 2500HD. Took less than 1 hours to install. Fits like a molded glove. From watching other trucks without one and what ensues after a u-joint failure or a rock ding in the drive shaft I BELIEVE That this is WORTH the Piece of MIND!!!!!!
Installation not as easy as videos make it out, September 17, 2017 By LeRoy (ALBUQUERQUE, NM)(Verified)
Just installed this on the 2017 Silverado 3500 HD High Country Dually (L5P) and it took a solid three hours. I installed it in the driveway with the front wheels on a pair of ramps. There's not nearly as much room to work as in the online videos. There was a lot of blind feeling for bolt heads during both the preparation and installation. Installing and torqueing the driver-side upper transmission bolt was probably the most difficult part of the entire procedure because of the angle and the clearance. All of that said, I believe it was worth it for the peace of mind. The brace is solidly built and fit perfectly (once I got it up there).