Features: 1.Applicable Models: Piston ring is fit for Outboard 2HP 2MSHV CYLINDER CRANKCASE 1997, and for Outboard 2HP 2MSHKZ CYLINDER CRANKCASE 2001. 2.OE Number: The part number of reference is 646 11601 01, please confirm whether it is consistent with the OE you need. 3.Excellent Sealing: The piston ring is designed to be sealed, which effectively prevents gas leakage inside the cylinder and ensures the normal operation of the outboard. 4.High Heat Conductivity: Piston rings have good thermal conductivity and can effectively conduct heat around the piston to reduce the engine temperature and protect the engine. 5.Advanced Material: Cylinder piston ring is made of premium materials, which is hardness, wear resistant, sturdy and durable and has a long service life. Specification: Item Type: Piston Ring Material: Metal OE Number: 646 11601 01 The main function of piston rings in outboard engines is to prevent gas leakage in the cylinder and to reduce friction, extending the service life of the piston and cylinder liner. Fitment: For Outboard 2HP 2SF Crankcase Cylinder Piston 1989 For Outboard 2HP 2SK Crankcase Cylinder Piston 1985 For Outboard 2HP 2SN Crankcase Cylinder Piston 1984 For Outboard 2HP 2SG Crankcase Cylinder Piston 1988 For Outboard 2HP 2MSHV CYLINDER CRANKCASE 1997 For Outboard 2HP 2MSHX CYLINDER CRANKCASE 1999 For Outboard 2HP 2MSHA CYLINDER CRANKCASE 2002 For Outboard 2HP 2MSHR CYLINDER CRANKCASE 1993 For Outboard 2HP 2MSHT CYLINDER CRANKCASE 1995 For Outboard 2HP 2MSHZ CYLINDER CRANKCASE 2001 For Outboard 2HP 2MSHS CYLINDER CRANKCASE 1994 For Outboard 2HP 2MSHU CYLINDER CRANKCASE 1996 For Outboard 2HP 2MSHY CYLINDER CRANKCASE 2000 For Outboard 2HP 2MSHW CYLINDER CRANKCASE 1998 For Outboard 2HP 2MSHQ CYLINDER CRANKCASE 1992 For Outboard 2HP 2MSHKZ CYLINDER CRANKCASE 2001 For Outboard 2HP 2SH Cylinder, Crankcase,Piston 1987 For Outboard 2HP 2SD Cylinder, Crankcase,Piston 1990 For Outboard 2HP 2MSHP Cylinder, Crankcase,Piston 1991 For Outboard 2HP 2SJ Cylinder, Crankcase,Piston 1986 Note: 1. Please double check the part number of your item, matching information is for reference only. 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!