Genuine BMW Belts, Pulleys & Brackets

12311739200 - : Alternator Pulley for BMW Image

Alternator Pulley

105 Amp Alternator. Valeo Alternator.
Backordered
11287790448 - : Idler Pulley for BMW Image

Idler Pulley

With 335d. 3 series. With turbo. With diesel. Upper.
$53.66
MSRP $74.02
Save $20.36
27.5% Off
12317560990 - : Alternator Pulley for BMW Image

Alternator Pulley

3.0L gas non turbo, valeo. 7 Rib. Vendor:valeo.
Backordered
11287509508 - : Idler Pulley for BMW Image

Idler Pulley

2.5, 3.0L, 2003-05.
$57.84
MSRP $72.30
Save $14.46
20% Off
11237838230 - : Damper Pulley for BMW Image

Damper Pulley

5.0L. 4.0L. M3. M6. M5.
$87.25
MSRP $118.26
Save $31.01
26.2% Off
12317560678 - : Alternator Pulley for BMW Image

Alternator Pulley

X5. 3.0l. Without diesel. 180 amp. With 4-zone/adaptive drive. 7 Rib.
$110.15
MSRP $149.29
Save $39.14
26.2% Off
11287516847 - : Idler Pulley for BMW Image

Idler Pulley

X3. 2004-06, idler. 2.5 & 3.0L without turbo, 2004-05, hydraulic tensioner, idler. 525i, 530i.
$57.84
MSRP $72.30
Save $14.46
20% Off
7119901979 - : Pulley Bolt for BMW Image

Pulley Bolt

2.8 & 3.0L, 2.8L 1999-00. 2.5L, 1996-00. 2.8 & 3.0L, 1997-98.
$4.21
MSRP $4.81
Save $0.60
12.5% Off

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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.