Genuine BMW Belts, Pulleys & Brackets

11287649371 - : Idler Pulley for BMW Image

Idler Pulley

2016-19. X1. X2. Without m model, 2018-19.
$62.30
MSRP $85.93
Save $23.63
27.5% Off
12317501754 - : Alternator Pulley for BMW Image

Alternator Pulley

Diameter-55mm. Bosch Alternator. X5. 3.0l. 120 amp. Z4. Air cooled, 528i, 530i, 525i. 2.5l & 3.0l, bosch.
$99.37
MSRP $122.79
Save $23.42
19.1% Off
11287852125 - : Crankshaft Pulley for BMW Image

Crankshaft Pulley

M5. X5. M8. X6. M550i xDrive. N63r engine. M competition.
Backordered
12318636420 - : Alternator Pulley for BMW Image

Alternator Pulley

5 series. Without gt models. With 4.4l. 750i, 750ix. 4.4L twin turbo, 2019-22. 4.4L twin turbo, m50i.
$107.09
MSRP $145.15
Save $38.06
26.2% Off
7119902906 - : Pulley Bolt for BMW Image

Pulley Bolt

With active steering, without turbo. With active steering. 328i, 335is. Sedan & wagon, with active steering, without twin power.
$2.59
MSRP $3.23
Save $0.64
19.8% Off
12311720368 - : Alternator Pulley for BMW Image

Alternator Pulley

Main, 850 series.
Backordered
12311708607 - : Alternator Pulley for BMW Image

Alternator Pulley

1999-01. Water cooled, 540i. X5. 4.4l. 4.4, 4.6 & 4.8L.
Backordered

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Why Belts, Pulleys, and Brackets Are Important

The belt, pulley, and bracket system ensures power is delivered from the engine to essential accessories like the alternator and water pump. A failing component can lead to misalignment, noise, or complete loss of accessory function.

Problems That Oftern Occur with Belts, Pulleys, and Brackets

On a vehicle like the BMW X3, worn pulleys or loose brackets may cause belt slippage, reduced performance, or overheating. To help with maintenance, get to know the following belts and pulleys under the hood of your BMW.

Main Belts and Pulleys in Your Car

  • Drive belts that transfer rotational energy.
  • Idler pulleys that guide and maintain belt tension.
  • Tensioner pulleys that keep belts properly aligned.
  • Mounting brackets securing pulleys in place.
  • Accessory pulleys for alternators and pumps.

Best Practices When Replacing Belts, Pulleys, & Brackets

  1. Disconnect the battery for safety.
  2. Relieve tension on the belt and remove it.
  3. Unbolt the worn pulley or bracket.
  4. Install the replacement part securely.
  5. Reinstall the belt and check alignment.

Other Parts to Consider Replacing

Replacing fenders during engine bay restoration enhances both function and appearance. Once you're done with underhood work, consider upgrading the look of your front fascia for both style and safety.

To find the best BMW parts, choose Bimmer OEM Parts. Shop here for exclusive discounts on OEM belts, pulleys, and brackets. For help with your order, contact us today.