Spectre's High Performance Push-In Breather was designed for valve covers with a 1-1/4 inch breather hole. This breather element is 2 3/8 inches tall, with an overall height of 3-1/4 inches. Constructed using triple chrome plated steel and our white synthetic fiber filter material, Spectre's high performance breather is manufactured using high quality materials ensuring it performs as good as it looks. This breather/vent air filter comes complete with a grommet for quick installation.