Don't neglect your motor mounts! Most stock BMW motor mounts are fluid filled and the stiffness of the mount depends on this fluid. But over time the fluid leaks out and the strength of the mount is greatly reduced. A worn motor mount allows the engine to twist and shift around. The harder you're driving the more shift will occur. As the engine is moving around it can contact other parts in the engine bay - usually cooling related. The mechanical fan can hit the radiator; the A/C compressor can hit a radiator hose, the exhaust will flex and may break. Twisting of the engine can also lead to shifting problems as the transmission twists with it. There are countless issues related to worn or compressed motor mounts so don't overlook these as a regular replacement item (every 50,000 miles).
BMW's hydraulic engine mounts are prone to failure, often due to fluid leaking out and compromising the mount's insulating ability. This results in unwarranted engine twisting and vibration, potentially risking damage to other accessories and parts in the engine bay. If your engine mount is leaking or damaged, this replacement unit from URO is the fix.
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With exposure to heat and elements, your motor mounts will break down with increasing age. A secure mount is vital to reduce drivetrain vibration and transfer as much horsepower to the wheels as possible.
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