Original magnesium M50 valve covers are showing their age, often warping, corroding, and leaking. Upgrading to an M52 cover gives you a better gasket design, easier coilpack sourcing, and better oil fill placement.

Printed from ABS and strength tested for reliability, this PCV valve matches factory OBD1 dimensions while mating directly to the M52 cover. It delivers a clean fitment with no dremeled leaking adapters, or catch cans required.

If you want to avoid expensive, overengineered full PCV conversions for your OBD1 M50 or OBD1 converted S52/M52, this is the simple fix.