Catch can adapter plug for MK2 9A 16V & MK3 ABA 8V engines ---Precision CNC machined from 6061 billet aluminum ---Perfect solution for removing your failed/ failure prone PCV breather and rerouting to a catch can ---Includes high-temp 100% silicone o-ring & brass 3/8" NPT hose barb ---Each piece is hand inspected to ensure consistent high quality ---Made in the USA --- --- Designed and fabricated by Performance MRP.