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1999 and 2005 E55 AMG
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Discussion Starter #1
Part number 113-202-04-19. Supercharger Drive Belt Idler Pulley. Replacement cost is in the area of $540. I just rebuilt mine for $27.

I pulled the belts off my car, spun the pulleys, and found three with dry bearings; serpentine pulley on the double supercharger drive belt idler pulley, serpentine idler pulley, and the serpentine tensioner pulley. I decided to replace them all but the cost of the above pulley was outrageous. I spent a few days researching and here is my solution.

See attached document for the part numbers and DIY info.

Hope this helps others.

Mod, if it is worth a sticky somewhere, I'd be glad to accept it!

:grin

Cross-posted at the other forum.
 

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Registered
1999 and 2005 E55 AMG
Joined
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226 Posts
Discussion Starter #2
Update: per input from rockthemullet on the other forum, the Dayco 89130 is a direct replacement and requires no sanding.
17mm I.D., 89mm O.D, 6-rib, 26.4mm wide. This I would use as my first choice and the 89012 as my second choice if this one could not be obtained.
 
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