Mercury – Quicksilver Water Pump Base Repair Kit | Cooling System Component | Complete OEM Kit | 44292A3

Overview

A steady stream of cooling water keeps your sterndrive alive, and the Mercury Marine 44292A3 Quicksilver Water Pump Base Repair Kit makes sure it stays that way. Designed for MerCruiser MR and Alpha One drives, this five-piece kit includes everything needed to rebuild the water pump base and restore proper cooling flow. Each component — from the gaskets and o-ring to the molded base and plates — is made to Mercury’s factory specs for a perfect fit. It’s a simple, dependable fix to keep your drive cool, efficient, and protected from overheating.

Key Features

• Purpose: Restores water pump base integrity to maintain consistent cooling performance.
• Contents: Includes gaskets, o-ring, base plate, and molded water pump base.
• Material: Built from marine-grade composites and corrosion-resistant metals for long life.
• Performance: Ensures strong, steady water flow to prevent overheating and improve system efficiency.
• Ease of Use: Designed for straightforward installation using common tools.
• Compatibility: Fits MerCruiser MR and Alpha One sterndrives.

Engine & Boat Compatibility

• MerCruiser MR and Alpha One drives.
• Common on runabouts, cruisers, and small offshore boats powered by MerCruiser sterndrives.
• Works in both freshwater and saltwater conditions.
• Direct replacement for the factory water pump base assembly.

Performance & Real-World Benefits

The 44292A3 water pump base kit helps restore the foundation of your cooling system. The molded base provides a secure seal and precise alignment for the impeller, while the new gaskets and plates ensure even water pressure throughout the drive. A solid seal means more efficient cooling and longer engine life.

Replacing a worn or damaged pump base prevents leaks, pressure loss, and overheating. Once installed, this OEM kit helps your MerCruiser maintain the reliable, steady cooling flow that Mercury engines are known for — keeping you on the water instead of at the dock.

Why Choose Mercury OEM

The Quicksilver 44292A3 is a genuine Mercury Marine part, engineered for the exact cooling specifications of MerCruiser drives. Aftermarket kits often fall short, using inferior materials or imprecise molds that can cause leaks or uneven water flow.

Mercury’s OEM parts are tested under real marine conditions for durability, fit, and performance. When you use OEM, you’re getting the same parts that Mercury installs at the factory — parts that last and perform exactly as designed.

FAQ

Q1: Which drives does this kit fit?
It’s made for MerCruiser MR and Alpha One sterndrives.

Q2: What’s included in the kit?
You’ll get gaskets, an o-ring, metal plates, and a molded base — everything needed for a full rebuild.

Q3: Why replace the water pump base?
Over time, heat, corrosion, or vibration can cause warping or leaks, reducing cooling efficiency.

Q4: Is it suitable for saltwater use?
Yes. All parts are built from corrosion-resistant, marine-rated materials.

Q5: Why OEM instead of aftermarket?
Mercury OEM kits ensure the right fit, sealing, and durability — critical for maintaining proper cooling pressure.

• Supersessions
  46-44292Q03,