O.S. Engines 22103030 Cylinder Rebuild Kit for .21 Speed Engine FEATURES: Hardened chrome-plated cylinder liner for high durability and long life Machined aluminum piston features parallel rings that trap fuel oils INCLUDES: One Cylinder Liner One Piston One Connecting Rod One Piston Pin Two Piston Pin Retainers REQUIRES: Installation on the engine cnh 3/11/09 ir/jxs