I've been given this Lsd and Fd... I have search around a bit on the website but can hardly get an answer so I hope someone can help me here!

Here's some pics:

Sorry for the size of the pics but at least you'll be able to see all details... The gear has 81 teeth! Dosen't seems to be a b-series fd...

Any help will be appreciated!

 

From eyeballing it diff bearings look like B16/LS/D-series EX/Si but the ring gear tooth count doesn't match any of them. Btw when I counted i got 82 teeth, but it's possible I miscounted.

 

Anyone? I'm thinking about a k20a lsd + 4.7 ring gear... Is there anything written somewhere on the part so I can confirm?

 

K-series LSD from 06-up Civic Si or Type R. Should be 81 Teeth.

 

never even thought of K-series.