79-81 CM400A / 80-81 CM400E / 79-81 CM400T Valve Stem Seal ~ Honda OEM 12209-413-003

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Valve stem seals control how much oil slips down the valve guides into the combustion chamber. As they harden with age you get oil smoke on start-up and under engine braking, along with fouled plugs. Fresh seals stop the oil burning and clean up the exhaust, making them a sensible addition to any top-end job. Replaces OEM #12209-413-003 Stops oil slipping past the valve guides Cures start-up and over-run oil smoke A smart addition to any top-end job Fits 1979-1981 Honda CM400A 1979-1981 Honda CM400T 1980-1981 Honda CM400E Show more