Water Pump Impeller Kit – Fits Mercury/Mariner 3.9-9.8 HP (Replaces 46-92970A5, 47-89980Q1) 115-170HP covering models from 1977 to

covering models from 1977 to 1997

This component is a critical part of the engine's cooling system

An audible alarm or warning light on your console may also activate

or steam from the exhaust at idle

along with aftermarket equivalents from Sierra (18-7981) and Mallory (9-37970)

Water Pump Impeller Kit – Fits Mercury/Mariner 3.9-9.8 HP (Replaces 46-92970A5, 47-89980Q1) 115-170HP covering models from 1977 toProduct Details This Water Pump Impeller Kit is a direct fit replacement for Mercury and Mariner 2 stroke outboard engines ranging from 3. 9 to 9. 8 HP, manufactured between 1975 and 1986. It is specifically designed for models with a 0. 438 inch driveshaft diameter, ensuring reliable cooling system performance. It serves as a direct cross reference for multiple OEM and aftermarket part numbers, including Mercury 46 92970A5, 47 89980T1, 47 89980Q1,