Sinister Diesel ’01 to ’10 Duramax Motor Mount Install
High-Torque Engine Holders
By now, we’re all familiar with the Duramax’s ability to produce vast amounts of horsepower and torque with nothing more than a few bolt-on parts and quality tuning. However, with the oldest of GM’s 6.6L diesel engines now reaching legal driving age themselves, it’s not surprising to see a few parts failures here and there. One area of concern—though rarely acknowledged by common owners and enthusiasts alike—lies in the factory engine mounts. Age, heat cycles, and stress from constant movement are all common causes of mount failure. Top that with the extreme torque a hopped-up engine can produce, and you’ve got the perfect storm for engine mount destruction.
Once one or more of the mounts fail, the engine is allowed more freedom to move about, placing undue stress on the transmission case at its mounting point. The best case is the transmission mount also fails; the worst case is the transmission housing itself cracks open. Fortunately, there is a solution. Sinister Diesel has recently pulled the wraps off its new Duramax engine motor mounts. Unlike the factory rubber mounts, Sinister’s version utilizes thick steel plate that is TIG-welded and produced in two separate halves joined together by a pair of polyurethane bushings and high-grade fasteners. The mounts are powdercoated Sinister’s signature blue and come with a lifetime warranty. Owners of ’01-to-’10 LB7, LLY, LBZ, and LMM trucks rejoice, because the mounts fit all of these trucks.
Replacing the engine mounts on a Duramax is not as complicated of a task as it might seem at first glance. While accessing the bolts can be a bit tricky, the job can be done in your driveway with an assortment of handtools. Not feeling up to the task? Any reputable diesel shop can do the replacement in a few hours.