GrimmSpeed Air/Oil Separator Hardware Kit 2002-07 Subaru WRX, 2004-21 Subaru STI

GrimmSpeed Air/Oil Separator Hardware Kit - 2002-07 Subaru WRX, 2004-21 Subaru STI

GrimmSpeed built its reputation on practical, serviceable engine hardware for the Subaru platform, and this hardware kit is a good example. If you have picked up a secondhand GrimmSpeed Air/Oil Separator without its fittings, this kit gets it back on your Subaru WRX or STI and keeps blow-by under control without having to source a whole new unit.

This listing covers the 2002-07 Subaru WRX (GDA/GGA) and 2004-21 Subaru STI (GDB, GRF, GVF, VAB) fitted with the GrimmSpeed AOS.

Note: If you are replacing this hardware, GrimmSpeed also recommends fitting an AOS rebuild kit at the same time, as the internal O-rings wear out over years of heat cycles.

Kit Contents

• 2x 12.7 mm (1/2 in) barb couplers
• 1x 12.7 mm (1/2 in) rubber cap
• 8x zip ties

Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year and AOS configuration are confirmed before ordering.

Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.