Edelbrock part #4204 Elite Series Short "Push-In" Breather is a die cast breather that will fit all existing Elite Series valve covers. The "push-in" mounting style is ideal for low-profile and center bolt Elite Series valve covers because they do not have internal clearance for the bolt-on style breathers. The lid is removable for oil fills, and the lower housing contains a reticulated foam element to allow gases through while trapping oil.