Main Drive Belt Lower Adjusting Idler Pulley, OEM - E34 530i/540i, E39 540i, E32 740i, E38 740iL, E31 840i, M60, M62

Idler pulley is the lower pulley on the tensioner arm for the M60/M62 V8 engine used in E34 530i/540i, E39 540i, E32 740i, E38 740i, and E31 840ci. This piece is the pulley alone and can be un-bolted from the tensioner arm. Mounting bolt and outer cover not included.

The pulley contains a set of bearings, that when worn, will produce a screeching or rumbling sound. It's important to inspect and replace the pulley regularly. Spin the pulley by hand and listen for grinding or rumbling sounds and if there is resistance. All of these are signs of bad bearings. The pulley wheel is made of plastic and they are known to crack and snap and get flung around the engine compartment. They can damage your radiator, hoses, fan, and other critical items that will lead to a more expansive/expensive repair. Since the deflection pulley is bolted in place, not pressed on, it is easily replaced during a routine belt change.

This is an OEM Drive Belt Idler Pulley manufactured by INA Schaeffler - the original supplier to BMW for this part, as well as many other engine components. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.