Where?

[DNK]

Where can you get an aftermarket 3.91 differential for a 318i?

[yellowbullet]

diffsonline is a vendor here. as you can probably see, they major in selling diffs.

edit: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33731&item=7939062432&rd=1

[DNK]

Thanks, but I can't find any 4cyl diffs on the diffs site (the Ebay diff was a 6cyl - incompatible from what I've heard). Maybe I suck at searching through their website, though?

[diffsonline]

I often have 318 differentials in stock, or nearby that I can get, inspect, and warranty. Let me know if you are still in the market.
-Dan