2-1/2″ dia. x 2-1/8″ tall. This chrome plated breather features a 1-3/4″ diameter indention in the top, to accommodate any self-stick medallion. Internal baffle and a high porosity filter make this breather ideal for high performance use. Fits factory and most aftermarket valve covers with 1.22″ diameter hole designed for push-in breather. Includes grommet. Medallion not included.