Water Pump Impeller Kit – Fits Mercury/Force/Mariner 15-25 HP (Replaces 47-85089T7, 47-85089Q4) Hydrofoil Stabilizer The most reliable method is

The most reliable method is to cross-reference your existing part number or confirm your exact engine model and year in the compatibility table above

and listen for any unusual noises while observing the new belt's operation

This kit is designed for a variety of 2-stroke and 4-stroke Mercury/Mariner outboards

Lightly lubricate the new impeller and the inside of the pump housing with a suitable marine lubricant

Is this belt toothed or smooth

Water Pump Impeller Kit – Fits Mercury/Force/Mariner 15-25 HP (Replaces 47-85089T7, 47-85089Q4) Hydrofoil Stabilizer The most reliable method isProduct Details This Water Pump Impeller Kit Fits Mercury Force Mariner 18 25 HP (Replaces 47 85089T7, 47 85089Q4) is designed for Mercury Mariner 2 stroke outboard engines from 1525 HP (19832006) and Force 1825 HP 2 stroke outboards. It ensures your engine maintains proper cooling and prevents overheating. This kit serves as a direct replacement for Mercury part numbers 47 85089T7 and 47 85089Q4, as well as the Sierra aftermarket equivalent 18 3215.