Air Oil Separator-Return Kit - LHD

• 2013-2016 Scion | FR-S
• 2013-2020 Subaru | BRZ
• 2017-2020 Toyota | 86

The Radium Engineering Air Oil Separator-Return (AOS-R) kit for the left hand drive Subaru BRZ, Scion FR-S and Toyota 86 keeps blow-by oil and other pollutants out of the intake pipe, manifold, turbocharger, and intercooler during all engine loads. High-powered modified 4U-GSE and FA20 engines tend to generate excessive blow-by oil and gases; in these cases, an ordinary small catch can may quickly fill with oil and not be adequate. The main difference from a catch can kit is that an AOS system returns what is collected back into the oil pan, so there is no servicing required. The AOS is constructed of three CNC machined sections that screw together and are sealed with O-rings.

• Product type: Air Oil Separator-Return (AOS-R) kit
• Fitment: Left hand drive 2013-2020 Subaru BRZ, 2013-2016 Scion FR-S and 2017-2020 Toyota 86
• Effectively raises the octane and increases engine performance with cleaner inlet air
• Prevents oil buildup in the intake or intercooler system walls, throttle body, and intake manifold
• Lowers hydrocarbon emissions
• AOS height: 6.3 inches (without fittings)
• AOS diameter: 3.45 inches round
• AOS capacity: 20.3 oz (600mL)
• Includes machined aluminum Radium Air Oil Separator
• Includes specially designed mounting bracket
• Includes SAE J30R7 rated PCV/emissions hose
• Includes coolant heater hoses and fittings
• Includes all necessary aluminum fittings and hose-ends
• Includes stainless steel mounting hardware
• Part number: 20-0351

Q&A

• Does this AOS-R kit fit my BRZ, FR-S or 86? Yes, for left hand drive 2013-2020 Subaru BRZ, 2013-2016 Scion FR-S and 2017-2020 Toyota 86 models.
• What is included in the box? The box contains the machined aluminum Radium Air Oil Separator, the specially designed mounting bracket, SAE J30R7 rated PCV/emissions hose, coolant heater hoses and fittings, all necessary aluminum fittings and hose-ends, and stainless steel mounting hardware.
• Does the AOS-R need to be drained? No. The AOS system returns what is collected back into the oil pan, so there is no servicing required.

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