BMW E81 E82 E88 E91 E92 E93 Vibration Damper Crank Shaft Pulley 7551308

BMW E81 E82 E88 E91 E92 E93 Vibration Damper Crank Shaft Pulley is an original component from the Tensioners and Pulleys group, designed for operation within the BMW engine drive system. This used OEM part ensures factory-fitment, proper interaction with the accessory belt, and stable torque transmission from the crankshaft to other components. It is a practical solution for drivers looking for a proven component with preserved geometry and operating parameters.

Specifications and technical data

• SKU: 7551308-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7551308
• Substitutable numbers: 7551308, 11237551308
• Category: Tensioners & Pulleys

Function of the crankshaft pulley in BMW

The crankshaft pulley in BMW E81, E82, E88, E91, E92, and E93 series models is responsible for transmitting drive from the crankshaft to engine accessories, such as the alternator or other elements of the belt system. A correctly selected pulley stabilizes belt operation, reduces slippage, and supports even loading of the auxiliary drive. The proper condition of this element has a direct impact on the engine's refinement and the durability of other components in this group.

Why choose an original BMW pulley

Using an original pulley from the Tensioners and Pulleys group allows you to maintain the factory operating parameters of the drive system. The OEM element is designed for specific BMW engines, which ensures that it:

• provides proper accessory belt guidance and the design-specified working diameter,
• maintains proper cooperation with tensioners and guide pulleys,
• reduces the risk of torsional vibrations transmitted to engine accessories,
• facilitates installation thanks to the preserved original geometry and mounting points.

For users who want to restore the correct operation of the belt system without experimenting with replacements, a used OEM element is a reasonable, technically justified choice.

Condition, fitment, and application in the E8x / E9x series

The presented pulley is a used part, sourced from dismantling, which allows for economical repair while maintaining the original BMW specification. The element is intended for use in selected body versions of the E81, E82, E88, E91, E92, and E93 series, where the belt system design is based on this type of pulley. Before installation, it is recommended to perform a standard inspection of the working surface condition and cooperating elements, such as tensioners and guide pulleys, to ensure the smooth operation of the entire system.

Replacement and good service practices

When replacing the crankshaft pulley, it is worth paying attention to several technical aspects:

• checking the condition of the accessory belt and potentially replacing it at the same time,
• verifying the operation of tensioners and pulleys for noise and play,
• applying the correct tightening torques in accordance with BMW service documentation,
• checking the belt alignment after installing the new component.

Such an approach minimizes the risk of needing to re-intervene in the drive system in the near future and helps maintain stable operation of engine accessories.

If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other elements from the same group, such as belt tensioners, guide pulleys, or idler pulleys, check the available parts in the BMW Tensioners and Pulleys category.

Technical support and service knowledge

When working on the engine drive system, the proper functioning of accessories, including the alternator, is also essential. For drivers considering the use of second-hand components in this area, a guide describing the symptoms of wear and the principles of part selection may be helpful – you can find it in the article When is it worth replacing an alternator with a used one: a practical guide for drivers.