Description

Restore proper engine cooling and prevent overheating with the Mercury MerCruiser Water Pump Repair Kit 89984T5. This genuine Mercury Marine OEM repair kit is designed to service the water pump system on select Mercury and Mariner outboards as well as MerCruiser sterndrives.

The kit includes the key components required to rebuild the water pump assembly, including the impeller and sealing hardware. Over time, sand, silt, and debris can wear down the impeller and reduce cooling efficiency. Replacing the water pump components with an OEM Mercury repair kit helps restore proper water flow and protects the engine from overheating.

Key Features

• Genuine Mercury Marine OEM water pump repair kit

• Designed to restore proper cooling system performance

• Includes impeller, gaskets, O-rings, and installation components

• Helps maintain proper water flow through the engine

• Protects engine from overheating caused by worn impellers

• Direct replacement for original Mercury water pump service components

Part Details

OEM Part Number: 89984T5
Mercury Reference Number: 47-89984T5
Product Type: Water pump repair / impeller service kit

Application: Marine engine cooling system water pump
Impeller Type: Short vane impeller

Typical Packaging: Complete repair kit including impeller, faceplate, gaskets, O-rings, drive key/pin, water tube guide sleeve, and drain screw seals (pump base not included).

Compatible Mercury & MerCruiser Engines

Designed for select Mercury and Mariner outboards and MerCruiser sterndrives equipped with short-vane impeller water pumps, including:

Mercury / Mariner Outboards

• Mercury / Mariner 65HP (4-cylinder) through V6 outboards with short vane impellers

MerCruiser Sterndrives

• MC-I (MerCruiser I)

• R Drive

• MR Drive

• Alpha One

Typical Serial Number Range

• MerCruiser drives 2495186 through 0D469858.

Function

The water pump impeller circulates cooling water through the engine to regulate temperature during operation. Over time the rubber impeller can wear, crack, or lose flexibility, reducing water flow.

Replacing worn water pump components helps:

• Restore proper engine cooling

• Prevent overheating and engine damage

• Maintain reliable water circulation

• Extend overall engine life

Important Compatibility Note

Water pump repair kits vary depending on engine model, drive type, impeller design, and serial number range. Always verify compatibility using the engine or sterndrive serial number before ordering to ensure the correct kit.

Cross-Stock / Superseded Part Numbers

• 47-89984T5 – Mercury service reference number

• 47-89984Q5 – Alternate Mercury kit version

• 47-89984T3 / 47-89984T4 / 47-89984T6 – Earlier versions replaced by this repair kit

Shipping: Ships same or next day for fast Canada wide shipping.