Designed and manufactured to reduce the problematic oil "blow by" experienced by high performance, high reving engines. The design incorporates diverting plates to direct oil away from the crank on return to the sump, and a number of one-way valves to prevent oil from flowing into the higher section of the crank case which can cause oil starvation during hard driving.

Fits all EJ20/25 engines including closed deck blocks.

Includes fitting instructions and required O-rings.

Free shipping to UK mainland.