Subaru OEM R180 Rear Differential (G/R 3.545) 08-14 STI | 27011AB221 RC350_2015-2022 Testing has shown ARP rod

Testing has shown ARP rod bolts to have ten times the fatigue strength of other bolts

Fully automatic - for charging and maintenance

Tomioka fuel rail system comes with adjustable fuel pressure regulator

There are others on the market making replacements for the bushings

- Billet Aluminum Adapter Plate for TS or Cosi IM (1)

Subaru OEM R180 Rear Differential (G/R 3.545) 08-14 STI | 27011AB221 RC350_2015-2022 Testing has shown ARP rodProduct Fitment: 2008 2014 Subaru STI 27011AB221 Differential Assembly Rear is Part Code 27011 in the diagram Warranty Disclaimer: Subaru of America will only warranty parts installed by a CERTIFIED Subaru Dealership. The part being installed must also match the vehicle VIN. IE If you install an STi block in a WRX at your friends shop, do not expect a warranty claim to come through if it explodes! Please use your best judgement.