Uploaded March 2018 | Updated September 2026, 2 days ago

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This DIY demonstrates how to replace the alternator, serpentine belt, AC belt, tensioner pulley, and idler pulley on a BMW E46 3-series. The car used in this video is a 2002 330xi/5-speed sedan.

Applications: BMW M52, M54, M56 I6 engines. E36, E46, E39, E53, E83, early E60, early E9x chassis.

Thanks to FCP Euro for sponsoring this video! fcpeuro.com

PARTS:

Alternator (Bosch AL0703N 120Amp): 12317501690
Idler Pulley: 11287841228
Tensioner Pulley: 11281748131
Idler Pulley Protection Cap: 11281730349
Tensioner Pulley Protection Cap: 11281727159
Idler Pulley Bolt with Washer (16mm): 07119904677
Tensioner Pulley Bolt (Torx 50): 07129905534
Protection Washer (Tensioner Pulley): 11281730532
Alternator Top Bolt (16mm, longer): 07119905523
Alternator Nut (17mm): 12427565287




E39Source WEBSITE: E39Source.com

BMW M3Source: youtube.com/E65Source

BMW E46Source: youtube.com/user/E46Source

BMW Reviews: youtube.com/user/Steptronic87