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Old 03-18-2022, 09:48 PM
AV8R4AA AV8R4AA is offline
Join Date: Aug 2015
Location: Justin Texas
Posts: 548
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I always assumed the dimples are “lightening” holes.
I’m talking weight and mass, not thunderstorms.
Both of the crank flange ARE the same part number.
I would presume that they would bolt up the same.
If the diameter is different than I am at a loss.

My goal is to keep the old redhead on the road. Not break the bank.
I have not checked yet, but a different diameter should require a different belt.

Different serpentine belt part numbers.
Guess I need a new balancer.
2003 4.6is X5
2003 525it

Last edited by AV8R4AA; 03-18-2022 at 11:32 PM.
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