Mercury – Water Pump Repair Kit | Cooling System Component | 40–70HP 2-Stroke Outboards | 60366T1

Overview

A well-functioning water pump keeps your outboard cool and running at its best. The Mercury Marine 60366T1 Water Pump Repair Kit gives older Mercury and Mariner 40–70HP 2-stroke outboards the refresh they need to maintain consistent cooling flow. This complete upper repair kit includes the impeller, key, gaskets, o-ring, plates, and molded upper housing — everything required to restore your pump’s performance. With an easy-to-install design and long-lasting materials, it’s a reliable fix that helps your engine stay strong and protected.

Key Features

• Purpose: Rebuilds the upper water pump assembly to maintain proper engine cooling.
• Contents: Includes impeller, key, o-ring, plates, gaskets, and molded upper housing.
• Material: Made from marine-tested rubber and corrosion-resistant components for durability.
• Performance: Restores steady water pressure and reliable cooling performance.
• Durability: Handles vibration, heat, and saltwater exposure without warping or cracking.
• Ease of Use: Straightforward installation using standard hand tools.

Engine & Boat Compatibility

• Older Mercury 40HP 2-stroke outboards
• Older Mercury 50HP 2-stroke outboards
• Older Mercury 60HP 2-stroke outboards
• Older Mercury 70HP 2-stroke outboards
• Compatible Mariner 40–70HP 2-stroke outboards

Performance & Real-World Benefits

The 60366T1 repair kit replaces all the key parts that wear down inside your water pump. The flexible impeller keeps water circulating evenly, while new gaskets and seals prevent leaks and loss of pressure. The result is reliable cooling that helps prevent overheating and protects your powerhead during long days on the water.

By using this kit, you restore factory-level performance without replacing the entire pump assembly. It’s a simple maintenance step that pays off with better reliability and longer engine life.

Why Choose Mercury OEM

The Mercury 60366T1 is a genuine Mercury Marine kit, made specifically for older 40–70HP outboards. Aftermarket kits can include parts that don’t fit quite right or use lower-quality rubber that fails under marine heat and pressure.

Mercury’s OEM components are precision-made, fuel- and heat-resistant, and tested under real conditions. With Mercury OEM, you get the right fit, the right flow, and dependable cooling season after season.

FAQ

Q1: What engines does this repair kit fit?
It’s made for older Mercury and Mariner 40–70HP 2-stroke outboards.

Q2: What’s included in the kit?
You get gaskets, o-ring, plates, impeller, key, and molded upper housing — everything needed for a complete rebuild.

Q3: How often should the water pump be rebuilt?
Inspect the impeller yearly and rebuild the pump every two seasons or 200 hours.

Q4: What’s the impeller made from?
It’s made from a high-flexibility marine elastomer that maintains flow and resists cracking.

Q5: Why OEM instead of aftermarket?
Mercury OEM kits are tested for perfect fit, reliable water flow, and long-lasting performance under real-world marine use.