Radium Engineering 2015+ Subaru STi Air Oil Separator-Return Kit

Radium Engineering is a leading manufacturer of high-performance automotive components, specializing in fuel systems, catch cans, oil coolers, and other engine management parts. Known for their precision engineering and innovative designs, Radium Engineering products are engineered to improve performance, reliability, and efficiency in both street and motorsport applications. Trusted by professionals and enthusiasts, Radium continues to provide top-tier solutions for high-performance and racing vehicles.