Water Pump Impeller Repair Kit for Mercury / Mariner Outboards

High-quality water pump impeller repair kit designed for Mercury and Mariner outboards ranging from 25HP to 50HP. Suitable for both 2-stroke and 4-stroke models across various cylinder configurations. This kit restores proper water flow through the cooling system essential for preventing engine overheating and extending engine life.

Fits the following Mercury / Mariner outboard models:

Will fit only models with gear housing drive shaft 2:1 gear ratio. Standard gearbox only. Not compatible with BigFoot models – excelpt 25 hp

4-Stroke Models:
25HP BigFoot (19982005)
30HP 3 Cyl, 3 Carbs
40HP 3 Cyl, 3 Carbs
50HP 4 Cyl, 4 Carbs (1.83:1 / 2:1 Gear Ratio, non-BigFoot)

2-Stroke Models:
30HP 2 Cyl, single carb (1995 and up, excluding engines with serial numbers starting with 0N0…)
40HP 2 Cyl, single carb (1995 and up)
40HP 3 Cyl, 3 Carbs (1995 and up)
50HP 3 Cyl, 3 Carbs (1998 and up, non-BigFoot)

Replaces Mercury Part Numbers:
821354A2, 821354A1, 821354A4

Product Features:
Marine-grade aftermarket kit
Includes impeller and essential pump repair components
Helps restore cooling performance
Built to OEM specifications
Direct-fit replacement easy to install

Please check compatibility before purchasing.
It is the buyers responsibility to ensure this part fits your engine.
Not sure? Message us our SSI Marine team is happy to help!

Why Buy from SSI Marine?
Quality marine parts at competitive prices
UK stock same-day dispatch before 1 PM
Tracked 24-hour delivery
Friendly, expert customer service

Order now from SSI Marine trusted for reliable outboard parts and fast UK shipping.