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Old 02-28-2011, 07:22 PM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
For the record, another user today reported you can replace "just" the pulley on the mechanical tensioners:
- Belts / Tensioner s/ Idler Pulley Replacement

Originally Posted by fiat84 View Post
Appears you can replace only the pulley separately on both the mechanical AC assembly and mechanical tensioner assembly, both use the same pulley. Before finding this out had replaced my entire tensioner assembly with an Ina brand and plan on doing the AC assembly later in the spring. Came across a E46 DIY where they only replaced the mechanical pulley's as the assembly was still in great shape.

Gates part #38018 brand at Napa in Canada $21.09 each heard good things about Gates belts, etc so will buy this one local.
GoodYear #49024 pulley $15.35 at
Dayco #89133 Bumper To Bumper Canada $30.71 - at Autozone as Duralast #231133, both manufactured by Ina

Note the mechanical pulley is different from the hydrolic pulley.
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