This is a breather for PML Small Block Chevy valve covers. Benefits:
- Pushes into the side of the PML valve cover
- Baffled on the inside
- Foam can be removed for cleaning
- Made of rubber-grommet material
When this is installed in a PML cover, this breather is nearly flush with side of valve cover.
Foam not sold separately.
If you are ordering valve covers with the PCV/Breather holes option, one of these is included.