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  • ITB Episode 60: BMW N51/N52 Engine Bracket Bolt Failure

    The N51 and N52 engines are in-line 6-cylinder gas motors used in several popular BMW models.

    These engines use aluminum motor mount brackets as well as aluminum bolts to secure the engine to the motor mount bracket. While these components were designed to have a service life of 8 to 10 years, we have heard numerous reports of the bolts shearing prematurely — in as few as 50,000 miles. So it’s a good idea to pre-emptively change them at or before this 50k interval.

    When the bolts fail, the engine movement torques the motor mounts in a way they were never designed for. Failure can also cause the engine to drop within the engine bay, damaging the water pump and other parts of the vehicle’s cooling system.

    In this episode of Inside the Brands, you’ll learn more about this issue and the Rein Automotive bolt sets and kits available to do a repair. Keep in mind that both the original bolts and replacement bolts are one time use, torque-to-yield units and should be replaced in sets. We also recommend changing the motor mounts in pairs.

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To help you find the correct part or fluid for a specific application, CRP Automotive products are listed in an online catalog powered by ShowMeTheParts.com. Compatible with all desktop browsers and mobile devices, this is the most up-to-date parts catalog accessible to the public and contains all the information you need to find the correct part for each application.

Subscribers to Activant/Epicor, WHI, and other leading eCat platforms should also be able to find CRP Automotive parts on these e-catalogs.

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