Brand new, never used with ZERO miles 15-21 STI R180 rear differential. 3.54 Ratio.
Warranty: 3 years or 36,000 miles, whichever comes first. Warranty is honored by Subaru of America. Your VIN must match the 27011AB320 part number. Rear differential also must be installed by an ASE certified shop.
Part Number: 27011AB320