47-43026T2 Water Pump Impeller & Key for Mercury MerCruiser | JLM Marine family-yamaha-8mlht The most crucial check is

The most crucial check is the impeller inner diameter (ID)

carefully loosen and remove the water jacket and cylinder head bolts

Frequent use in sandy or silty water may require more frequent inspections and replacements

It is also a compatible replacement for aftermarket parts including Marinepro 99157T2

Torque Bolts: Tighten the housing bolts to the manufacturer's recommended torque specifications

47-43026T2 Water Pump Impeller & Key for Mercury MerCruiser | JLM Marine family-yamaha-8mlht The most crucial check is47 43026T2 Water Pump Impeller & Key for Mercury MerCruiser This high quality aftermarket water pump impeller with key is designed for Mercury MerCruiser stern drive engines, including the Mercruiser Alpha One Gen 2, and a wide range of Mercury outboard models from 65 HP to 220 HP. Engineered to meet OEM specifications, this impeller ensures reliable cooling system performance across 4 cylinder and 6 cylinder applications. This impeller directly