Moroso Positive Locking Breathers

4.33 out of 5 stars 15 Customer Reviews

Designed just for racecars, Moroso's positive-locking valve cover breathers meet the rules for cars running 7.99 seconds and faster. They rely on threaded collars that mount on the inside of the valve covers, through the standard 1.22 in. opening, to provide secure attachment. They also have internal stainless steel baffling to keep oil and air separated. Jam nuts allow the breathers to be positioned in any way necessary to suit plumbing requirements, and Buna-N gaskets that are resistant to oil, alcohol, and race fuel are used to form an airtight seal. Mounting hardware is included.