MerCruiser Marine Water Pump Kit MR/Alpha 1 S/N 6854393-0D469858 Sierra 18-3320

Marine Water Pump Kit for MerCruiser

This marine water pump kit is designed for MerCruiser MR/Alpha 1 sterndrives, providing a reliable replacement for the original water pump. It includes Sierra 18-3320 cross-reference and fits serial numbers 6854393 through 0D469858.

Overview

This water pump kit for MerCruiser MR/Alpha 1 drives delivers essential cooling for your engine, ensuring optimal performance. It is a direct replacement that matches OEM specifications and includes all necessary components for a complete overhaul.

Built For Performance

• Includes impeller, housing, gaskets, and seals
• High-quality materials resist wear and corrosion
• Precision-machined components ensure proper water flow
• Easy to install with basic tools

Fits These Machines

• for MerCruiser MR drive
• for MerCruiser Alpha One

On-The-Job Use

• Replaces a worn water pump impeller to prevent overheating
• Used during routine maintenance of MerCruiser sterndrives
• Ensures reliable cooling for both saltwater and freshwater boating

Specs At A Glance

Good To Know

Q: Does this kit include the impeller? A: Yes, the kit comes with a new impeller, housing, gaskets, and seals for a complete water pump rebuild.

Q: Is this a direct OEM replacement? A: It matches the original MerCruiser water pump specifications and is cross-referenced as Sierra 18-3320.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.