Radium Engineering AOS-R Air Oil Separator Kit Subaru WRX, WRX STi, Forester XT - 20-0607

Radium Engineering 20-0607 Air Oil Separator-Return (AOS-R) kit for the Subaru WRX, WRX STi and Forester XT. Left-hand drive vehicles only.

• Supplies cleaner inlet air to raise effective octane and performance
• Keeps oil out of the intake, intercooler, throttle body and intake manifold
• Lowers hydrocarbon emissions
• Returns collected oil to the oil pan, so no servicing is required
• Built-in heater prevents water condensing in the separator
• Integrated water trap around the bottom perimeter
• Height 6.3 in (without fittings), diameter 3.45 in, capacity 20.3 oz (600 mL)
• Inlet, outlet and return ports: 7/8"-14 thread for 10AN ORB fittings. Two coolant ports: 7/16"-20 thread for 4AN ORB fittings
• Not compatible with right-hand drive vehicles. RHD vehicles need the Radium universal AOS-R

Included

• Machined aluminum Radium Air Oil Separator
• Subaru specific mounting bracket
• SAE J30R7 rated PCV hose
• Coolant hoses and fittings
• Aluminum fittings and hose ends
• Stainless steel mounting hardware

Fitment

Resources

• Radium Engineering product page

Contact us if you are unsure of fitment or Size HERE