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All in all it went well and Im so glad to have my 2000 D2 A8 running like a champ again. The transmission was in superb condition just as foreseen -- EH
    
Tech Article

Audi D2 A8 Mechanical Fan Bearing

Last Updated: 11/16/2018
   
Parts Group: Mechanical cooling fan bearing
This article discusses the mechanical cooling fan bearing for the D2 Audi A8 (1997 through 2002) with the main focus being on the pricing. If you're not here for the technical analysis but would rather buy a used unit from us, guaranteed to work and fit, then please select the link below.The information herein is based on my Audi A8 D2 Quattro project cars.

As to the three-bolt-flange bearing: it's Audi part number 077121211 and it's sold as integral with a shaft; Audi officially calls the part a "flanged shaft" but it's the bearing that wears and fails. It is used on the early D2 A8 motor (the 32-valve one) and also the later motor (the 40-valve one, which is also used on the C5 A6 4.2 V8).

This is a double-race bearing. As it deteriorates, eventualy some of the ball bearings fall out and the fan starts to wobble to where it can cause damage. On my 1998 A8 car it damaged the upper radiator hose and the radiator.

This is a difficult part to reach since it's in front of the engine and space is very tight, especially on the post-facelift (2000-and-on) A8 cars (in which group I'm including the S8).

New, these parts generally go for just under $500. Europe Parts was the cheapest new vendor last I looked which is was in early 2017; they were just under $400. The problem with buying this is in used condition is that these are one of the classic wear-and-eventually-fail items on these cars so at best you're buying time. The ideal situation is where someone has just bought a new bearing so that it's barely used, and then somehow you get your hands on it at used-item prices but I don't know how to tell with any level of precision just how much wear is on such a used part. A used part seems prudent only if you can do, and enjoy, the work of replacing it.
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