COBB Cat-Back Exhaust for 2015-2020 WRX/STi (515160) Skunk2 The inlet thread is a

The inlet thread is a -10 AN female ORB (O-ring port fitting) and the discharge is a female -6 AN ORB (O-ring port fitting)

(24) Washers

GSC Power Division has instituted this coating across our entire product line with extreme attention to the Subaru EJ motor due to its horizontal design and the tough oiling conditions inside of the heads to the camshafts and translating tappets

efficiently transmit motor power and give drivers a connected feel with their car

more consistent shift

COBB Cat-Back Exhaust for 2015-2020 WRX/STi (515160) Skunk2 The inlet thread is aThe COBB stainless steel cat back exhaust fits 2015 2020 Subaru WRX and STi models. Made from 2. 5" and 3" 304 stainless steel construction finished with quad 3. 5" double wall tips. This simple bolt on installation offers excellent power gains, outstanding build quality and an impressive exhaust note. Vehicle Fitment: 2015 2020 Subaru WRX 2015 2020 Subaru STi Features: 2. 5" & 3" 304 Stainless Steel Construction Quad 3. 5" Double Wall Tips CNC