RADIUM Engineering 20-0351 AOS-R Air Oil Separator Kit for Subaru FR-S BRZ Toyota GT86 GR86

The RADIUM Engineering AOS-R (Air Oil Separator - Recirculating) Kit is a complete bolt-in solution designed specifically for the Subaru FR-S, BRZ, Toyota GT86, and GR86 platforms. This advanced air oil separator system effectively removes oil vapor and contaminants from the crankcase ventilation system before they can enter the intake tract, ensuring cleaner combustion and improved engine longevity.

Key Features:

• Prevents oil buildup in the intake manifold and intercooler, maintaining optimal airflow
• Increases engine performance by ensuring cleaner inlet air reaches the combustion chamber
• Lowers hydrocarbon emissions for more complete combustion
• Integrated coolant heating system maintains optimal separation efficiency in cold weather conditions
• Complete bolt-in installation with all necessary mounting hardware and fittings included
• Recirculating design returns separated vapors to the intake system for compliance and environmental benefits
• CNC-machined aluminum construction with internal baffle system for maximum separation efficiency

This AOS-R kit is ideal for both daily drivers and performance vehicles, particularly those running forced induction or experiencing extended high-RPM operation. The coolant-heated design prevents condensation buildup and ensures consistent operation across all temperature ranges. Regular maintenance simply requires periodic draining of collected oil through the integrated drain valve.