BMW Z3 Drive Belt Replacement

The BMW Z3 engine utilizes two drive belts to drive the accessories pulleys at the front of the engine.
The power steering pump, coolant pump and alternator are driven by one belt. A separate belt drives the AC compressor. A tensioner pulley tensions each belt. In some models an engine- cooling fan mounted on a thermal clutch is also driven by one of the drive belts.
The belts are tensioned by strong tensioners and do not need periodic adjustment. But they will, over time and due to heat, cold and the rigors of operating multiple pulleys, develop signs of wear. The signs of wear include: cracks, fraying, glazing or missing chunks. In addition, the tensioners and idler pulleys may develop defects. Bearings in these pulleys are lifetime lubricated. The lubrication eventually dries up or wears out and may cause noises. If a pulley bearing deteriorates, it can tilt and allow the belt to fly off the pulleys. If it seizes it can damage the belt quite quickly due to excessive friction.
In this article, I'll go over the steps involved with replacing the drive belts on the BMW Z3 4-cylinder engine and 6-cylinder engine. Be sure to work with a cool engine and remove the key from the ignition. With your engine cold and turned OFF, inspect your drive belts for wear. The belts should be free from cracks, fraying, glazing and missing chunks. Replace your belt if any of the previously mentioned issues are present or every four years.
Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches.
Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you are working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Never work on your vehicle if you feel the task is beyond your ability.
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Project Time: 2 hours
Tab: $40
Tools: Set of sockets, wrenches, screwdrivers
Parts Required: Drive belt
Performance Gain: Proper engine accessory operation
Complementary Modification: Replace idler pulley

[@lamename66]

AN excellent video with all of the important details and well labeled images. No extra banter to get in the way - and no annoying pleas for likes or follows. I followed the instructions and the job went perfectly - thank you!

[@pelicanparts]

Thanks for the feedback. Glad it was helpful!

[@Mr_Bones.]

As a happy BMW Z3 1.9L owner, these videos keep me on the road and trouble free. Thank you, your website and technical repair articles are a God send.

[@pelicanparts]

Thanks for the feedback. Glad we could help.

[@Los7Super]

Y’all are awesome thanks a lot boys 🫶🏼

[@pelicanparts]

Our pleasure!