Need a stock 3.9 R160 rear diff, complete and still intact... not parts/components.

Has to be 3.9 to match my 05 STI 6spd. Was using a 2001 Legacy L rear diff up until today when it grenaded on me.

Looking for something ASAP so I can take it in for a rebuild with a Cusco 1.5 way lsd.

Thanks!

 

I have 2 diffs for sale, from 2004 and 2005 WRX.
50 bucks.

 

Thanks man wish I could use one of those.

For anyone checking this out:

02-05 WRX (MT) has a transmission final drive of 3.9 but a 1.1:1 center diff ratio and a rear diff ratio of 3.545

Meaning the rear end would still be a mismatch for a 05 USDM STI 6spd that has a 1.0:1 center diff.

My best be I'm hoping for is an Impreza L (MT) or Legacy L (MT) rear diff.

 

I honestly thought using the 2L wrx rear diffs for a 6 speed swap was the norm...

 

From all my research I've done it appears they are a direct match for the 06/07 STI 6 speeds because the 06/07 has a 1.1:1 center diff ratio just like the WRX.

04/05 STI 6 speeds have a 1.0:1 center diff so bolting up a 3.545 rear end from a WRX won't match up without changing the R&P.

 

Also as an update, going to hold off on buying another R160 atm.

Pulled my Legacy L rear diff apart yesterday and the R&P still looked in great shape despite there being metal filings all over the magnetic drain plug. I suspect something is wrong or damaged on my Cusco 1.5 way lsd. Just going to take all the components into a specialist to get them inspected and go from there.

 

If you end up needing one I have one that I was using with my 04 six speed swap before going to R180.

 

^ Yea man if you could hold onto that for me that would be great! I can send you a pm as soon as I find out if mine is useable or not.

 

Sure. Just collecting dust right now. Lol

Just hit me up if you end up needing it.

 

Will do, thanks!

 

Sent you a pm k-dogg

 

Bump!

Back to looking for another 3.9 R160.

I need a donor to go with my brand new Cusco 1.5 way (finally got another one!)