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      09-30-2021, 01:51 PM   #683
Biginboca
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Drives: 2009 E92 328i 6MT
Join Date: Jun 2017
Location: Boynton Beach, FL... USA

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Ok since you guys brought it up and this thread is totally derailed anyway I have a question…

I’m getting ready to install one of those crank hub seal guards. There are quite a few companies selling them now.

They all work the same way, undo the crank hub pulley and then bolt the guard over the crank hub seal using the bottom front 2 bolts below the crank hub. Shown here:



So some companies selling the guards are using aluminum bolts, some are using stainless bolts, and some using undisclosed (I assume steel) bolts. I ordered the ECS Tuning one which uses stainless bolts.

I did some reading and it said any of those would be ok in aluminum provided you are using a smaller steel part in a large aluminum part. (Like a single bolt into an aluminum block).

But is that area shown in the image above with the 2 screws aluminum or magnesium?
Appreciate 0