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Mechanical A/C Belt Tensioner Assembly

Complete tensioner assembly with roller
Mfg Part #
11287512758
ECS Part #
ES#205356
Brand
Ruville
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Product Details

Proper belt tension is essential for efficient power transfer and long accessory belt life. Tensioners are a roller that spins on an internal bearing. The roller pushes against the back of a reinforced rubber belt to keep it properly adjusted. Automatic tensioners are constantly adjusted by an internal coiled spring that maintains the correct tension, on the fly. Tensioners with weak springs or worn rollers allow belts to slip. This results in noise, poor power transfer, and accelerated belt wear.

All tensioners should be inspected periodically for loose or worn bearings and grooved or worn pulley circumferences. ECS recommends installing a new tensioner and intermediate pulleys whenever belts are replaced.

Previous Revisions
  • 11287512758

This Part Fits the Following Vehicles

Make Model Submodel Engine
BMW E39 525i M54 2.5L
BMW E39 530i M54 3.0L
BMW E46 325Ci M54 2.5L
BMW E46 325i M54 2.5L
BMW E46 325xi M54 2.5L
BMW E46 330Ci M54 3.0L
BMW E46 330i M54 3.0L
BMW E46 330xi M54 3.0L
BMW E53 X5 M54 3.0L
BMW E60 525i M54 2.5L
BMW E60 530i M54 3.0L
BMW E83 X3 M54 2.5L
BMW E83 X3 M54 3.0L
BMW Z4 2.5i M54 2.5L
BMW Z4 3.0i M54 3.0L
BMW Z4 3.0i N52 3.0L
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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