This water pump is a new aftermarket replacement for select John Deere compact utility tractors and Yanmar YM series diesel tractors. It is designed to replace a leaking, worn, noisy, or failed water pump and help restore proper coolant circulation. Fits John Deere 850, 950, 1050, and 900HC tractors. Also fits Yanmar YM1700, YM2000, YM2010, YM2210, YM2310, YM2420, YM2500, YM2610, YM3000, and YM3110 applications. Common replacement part numbers include CH12859, 721250-42700, 721252-42700, 121250-42011, and CH10678. Includes gasket and mounting hardware as shown. Please compare your original pump, part number, fan hub, and mounting hole pattern before ordering.
Tractor Compatibility: Replacement water pump for John Deere 850, 950, 1050, and 900HC compact utility tractors. Also fits select Yanmar YM series tractor applications.
Yanmar Model Fitment: Fits Yanmar YM1700, YM2000, YM2010, YM2210, YM2310, YM2420, YM2500, YM2610, YM3000, and YM3110 tractors. Please verify your original pump style before ordering.
Replacement Part Numbers: Replaces CH12859, 721250-42700, 721252-42700, 121250-42011, and CH10678. Compare your original part number and mounting design to confirm fitment.
Pump Details: Water pump includes gasket and mounting hardware as shown. Common specifications include 6 mounting holes and approximately 2" fan hub diameter.
Aftermarket Replacement: New aftermarket replacement part designed to help restore proper coolant circulation and engine temperature control. Brand names and part numbers are used for compatibility reference only.