GSC EJ series Chrome Polished Super Alloy Exhaust Valve-33mm Head(+1mm)-SET of 8 Oiling 14mm Top and Bottom O-Ring

14mm Top and Bottom O-Ring

but this technology is a breakthrough for Subaru owners

6:1 Custom CP UNLESS you select a different Block Configuration in the pull down

In conjunction with ARP

GSC EJ series Chrome Polished Super Alloy Exhaust Valve-33mm Head(+1mm)-SET of 8 Oiling 14mm Top and Bottom O-RingStem Diameter (mm) 6. 0mm Overall Length (mm) 104. 25mm Head Diameter (mm) 33mm GSC Power Division Super Alloy Exhaust Valves for EJ20 25 Turbo are for those running high horsepower, high EGT set ups that need a valve that will last in 2000F conditions. The Super Alloy Exhaust valves have chrome polished stems to create a smooth, durable finish for added life and better lubricity, especially when paired with the GSC Manganese bronze valve guides.