RADIUM 20-0351 Air Oil Separator-Return (AOS-R) Kit for SUBARU BRZ 2012-2020 / TOYOTA GT86 2012-2021

Description RADIUM 20-0351 Air Oil Separator-Return (AOS-R) Kit

The Radium AOS-R (Air Oil Separator-Return) Kit is engineered for high-powered Toyota 4U-GSE and Subaru FA engines that experience excessive blow-by. Unlike traditional catch cans, the AOS-R returns oil directly to the oil pan, eliminating the need for regular servicing. It helps prevent oil contamination of the intake, turbo, and intercooler, while its integrated heater and water trap ensure reliable operation in all conditions.

Key features

• Recirculates separated oil back into the oil pan (no maintenance required)
• Integrated heater prevents condensation; built-in water trap at the base
• Keeps intake, intercooler, and turbocharger free from blow-by oil and vapors
• Machined aluminum construction with high-quality anodized finish
• Designed for high-output FA/4U-GSE engine applications

Kit includes

• Radium machined aluminum Air Oil Separator
• Custom mounting bracket
• SAE J30R7 PCV/emissions-rated hose
• Coolant heater hoses and fittings
• Full set of aluminum fittings and hose-ends
• Stainless steel mounting hardware