FS Mopar 3.90 Limited Slip Differential 68427798AA $1200

[2ndAmend]

I believe this fits 15-23 Challenger. 15,000 gentle miles on it after a proper, gentle break-in. Absolutely perfect, no whine or any problems. I put this in when I bought the car, now I am selling the car with the OEM diff and no longer need the 3.90.

Local pick-up preferred, this is not cheap to ship.

 

[2ndAmend]

 

[Unholy707]

Adding to the post - people with an m6 want this. Good luck with the sale!

 

[16GoManGoHC2]

3.90 Definitely helps the high gear ratio stock Hellcat M6 transmission. These Diffs hold up just as well as the stock 3.70 Hellcat Diff, I don’t think there’s any difference in strength between the two. I’ve used both for over five years, worse that’s happened to them is they get noisy (whine on deccel mostly) and usually that takes a severe wheel hop event to make happen. Never had one outright break. Trusted seller here.