Shop OEM BMW Part # 11287515865 (11-28-7-515-865, 11281433502, 11287503424). Accessory Drive Belt Tensioner Assembly. 4.0 & 4.4 LITER, alternator belt, adjust. 4.4, 4.6 & 4.8 LITER, 2000-03, adjuster, alt, water pump

Pulley. Tensioner. Accessory Drive Belt Assembly. Adjusting with Lever.
Assembled device that applies load to the Drive Belt. For Serpentine Belt.

Accessory Drive Belt Tensioner Assembly

Fits 540i, 740i, 740iL, X5

4.0 & 4.4 LITER, alternator belt, adjust. 4.4, 4.6 & 4.8 LITER, 2000-03, adjuster, alt, water pump. 540I 1998-03, adjuster, alt & P/S belt. X5; Serpentine Belt; 4.4L. X5; Serpentine Belt; 4.6L.
Drive Belt Tensioner - Repair or Replace
A squeaking or squealing noise from your engine bay is usually due to a loose drive belt. Consider replacing the drive belt tensioner on your .