Product details
Replacement for 200 225 250 Mercruiser Alpha 1 One I Generation 2 II Two SternDrives from 1991-2021 
Part Number: OEM: 817275Q05 817275Q4 817275K05 817275A4, replacement for Sierra Marine 18-3147. 
Function: Can provide higher flow rates and cooling flow to protect outboard engine, and easy to install. 
Package: The whole water pump rebuild kit includes impeller, housing gasket, housing, plate, O-Ring, etc. 
Material: The impeller is made from a neoprene rubber compound to make sure durability and reliability.
2024 Water Pump Impeller Repair Kit 817275Q05 Replacement for 200 225 250 Mercruiser Alpha One Gen II 1991-2021