BC3970 – Honda B16A/H22A 5.5mm Valve Stem Seals for Stock or Aftermarket Valve Guides

BC valve stem seals are designed for stock or aftermarket valve guides (BC3900/3901). These Viton seals allow a carefully defined amount of engine oil from the cylinder head into the combustion chamber—to lubricate the rotating valve stem in the valve guide. BC valve stem seals are produced from high performance materials for increased part life and lower wear. Set/16