Uses internal foam discIdeal for plumbing your crankcase into the air cleanerBaffle system prevents oil from entering air cleanerGold iridite steel finishFits valve cover with 1.22" holeMoroso oil separator/breather is ideal for plumbing your crankcase ventilation system into the air cleaner. Uses internal foam disc and baffling system to prevent oil from entering air cleaner. Fits all valve covers with 1.22" hole, includes rubber grommet. Not legal for sale or use on pollution-controlled vehicles.