4.10 E30 M3 diff

[randomtask37]

ahh, i c.

[cruisin84BMW]

wear can you buy these diff's from?

[egk2]

Anyone know the part number for the m3 diff, I found a used one and want to confirm before I buy, thanks.

[Mike]

I know someone with a 325ic/a and sure enough I rubbed the diff tag with a little used oil and sure enough it had a 4.10 S on it. Dude said its original, car had over 215k on it though. build date was older than 87' don't remember though.

[nameisbradgreen]

this might be a newbie question but here it goes...

what will a M3 diff do in my car?

Brad

[Charlie]

this might be a newbie question but here it goes...

what will a M3 diff do in my car?

Brad

Nothing other than give you a higher driveline loss.

You already have a 4.10 (possibly Limited slip) "small case" diff in the 318is, going to a "big case" 4.10 wouldn't help you any. It's heavier and larger, if anything it would rob you of power.

-Charlie