Feature: 1. Applicable Model: Engine piston is fit for 2HP 2 Stroke Outboard engine, fit for 2SF 1989, 2SK 1985, 2MSHV 1984, 2MSHX 1999, 2MSHA 2002 Cylinder Crankcase. 2. OE Number: The part number of outboard motor piston for reference is 646 11631 01 98, please confirm whether it is consistent with the OE you need. 3. Durable: The outboard piston is made of metal material, with high strength and stable performance to ensure that the piston can work stably for a long time under high temperature and high pressure environment. 4. Excellent Sealing Performance: The sealing performance between the piston and the cylinder will directly affect the gas efficiency and exhaust noise. The piston surface contains a sealing ring to ensure efficient air tightness and lubricity and reduce fuel waste. 5. High Accuracy: The piston must have high accuracy to ensure its close fit with the cylinder block, improve gas efficiency and reduce exhaust noise. Specification: Item Type: Outboard pistonMaterial: MetalOEM: 646 11631 01 98 Description: Outboard piston is one of the core components of Marine engine. Its main function is to convert high temperature and high pressure gas energy into mechanical energy, drive the crankshaft rotation, and trigger power outputFitment:Fit for Outboard 2HP 2SF 1989 Crankcase - Cylinder - Piston Fit for Outboard 2HP 2SK 1985 Crankcase - Cylinder - Piston Fit for Outboard 2HP 2SN 1984 Crankcase - Cylinder - Piston Fit for Outboard 2HP 2SG 1988 Crankcase - Cylinder - Piston Fit for Outboard 2HP 2MSHV 1997 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHX 1999 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHA 2002 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHR 1993 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHT 1995 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHZ 2001 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHS 1994 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHY 2000 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHW 1998 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHQ 1992 CYLINDER CRANKCASE Fit for Outboard 2HP 2MSHKZ 2001 CYLINDER CRANKCASE Fit for Outboard 2HP 2SH 1987 Cylinder, Crankcase,Piston Fit for Outboard 2HP 2SD 1990 Cylinder, Crankcase,Piston Fit for Outboard 2HP 2MSHP 1991 Cylinder, Crankcase,Piston Fit for Outboard 2HP 2SJ 1986 Cylinder, Crankcase,Piston. Package List: 1 x Outboard Piston 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!