Differential Mounting Bolt Sizes

[MisterMiniS]

I need some help determining what the bolt sizes are for the differential. RealOEM has the top two at M12x1.5x25mm but does not say what the lower two are. Additionally, I'm curious what the nut/washer sizes are for the associated lower bolts. Thanks.

[Mr. Tasty]

the bottom bolts thread into the rear subframe, so no nut needed. The bolts and washers are exactly the same as the backmounted bolts. If you look on realoem at part number 18, is says it requires 4 for assembly.

http://realoem.com/bmw/showparts.do?model=1554&mospid=47321&btnr=33_0124&hg=33&fg=10

[MisterMiniS]

Awesome, that makes a ton of sense. Not sure why after staring at it for hours I assumed it was a bolt through and a nut. Found this picture that pretty much confirms what you say.

http://www.m2bmw.com/photos/other%20...d/IMG_2215.jpg

Thanks!

[Mr. Tasty]

Awesome, that makes a ton of sense. Not sure why after staring at it for hours I assumed it was a bolt through and a nut. Found this picture that pretty much confirms what you say.

http://www.m2bmw.com/photos/other%20m2's/roy-wicklund/IMG_2215.jpg

Thanks!

:up:

[pbsun]

Wow that's a nice under belly