Mercury – Quicksilver Water Pump Assembly Cover | Cooling System Component | Composite with Seal Kit | 42089A2

Overview

A good seal keeps your engine cool and your boat running smoothly. The Mercury Marine 42089A2 Quicksilver Water Pump Assembly Cover protects the heart of your cooling system on Mercury, Mariner, and Force 6–15HP outboards. It’s built to factory specs to restore proper water pressure and protect the impeller from wear. The kit includes the cover, insert, and seal, giving you everything you need for a clean, leak-free installation. It’s durable, dependable, and made to handle long days on the water without losing its fit or integrity.

Key Features

• Purpose: Replaces a worn or cracked water pump cover to restore consistent cooling.
• Material: Molded from marine-grade composite that won’t corrode or warp under heat.
• Design: Precision-built to Mercury OEM standards for an exact fit and reliable sealing.
• Includes: Cover, insert, and seal for a complete replacement solution.
• Performance: Maintains steady cooling pressure for smooth, efficient engine operation.
• Compatibility: Fits Mercury, Mariner, and Force 6–15HP outboards (see full list below).

Engine & Boat Compatibility

• Mercury 6–8HP, 9.9HP Sail Mate, and 15HP Sail Power (serial 0A197112–0G760299).
• Mercury and Mariner 8–15HP TwoStroke (0G760300–0T999999).
• XR-10, Magnum 10, SeaPro 10, and Marathon 10 (0D038000–0T999999).
• Mercury, SeaPro, and Marathon 15HP (0G044365–0G760299).
• 1998 Force 15HP and Sears 9.9HP and 15HP outboards.
• Performs in both saltwater and freshwater conditions.

Performance & Practical Benefits

The 42089A2 cover keeps your outboard’s cooling system working efficiently by holding pressure steady and preventing leaks. A clean, tight seal ensures the impeller moves water at the right rate, protecting your motor from overheating and corrosion.

The included insert and seal eliminate guesswork during installation — everything fits perfectly the first time. Built from corrosion-resistant materials, this cover won’t deform or crack under stress, making it a long-term fix that restores your engine’s cooling reliability.

Why Buy OEM

Precision and fit are key in a cooling system. The Quicksilver 42089A2 is a genuine Mercury Marine part, built using the same specs and materials found in factory assemblies. Generic covers often don’t seat properly or use weaker materials that fail under pressure, leading to uneven flow or leaks.

Mercury’s OEM design ensures you get the right fit, proper sealing, and long-lasting protection — exactly what your outboard’s cooling system was designed for. With OEM, you install it once and trust it to perform trip after trip.

FAQ

Q1: Which engines does this fit?
It fits Mercury, Mariner, and Force 6–15HP outboards, including Sail Mate, Sail Power, SeaPro, and Marathon models.

Q2: What’s included in the kit?
It comes with the cover, insert, and seal — all OEM Mercury parts.

Q3: Why should I replace the water pump cover?
A damaged or leaking cover can cause reduced pressure and overheating. Replacing it keeps your cooling system efficient.

Q4: Can it handle saltwater use?
Yes — it’s built from marine-grade materials that resist corrosion and wear.

Q5: Why go with OEM instead of aftermarket?
OEM guarantees the proper fit, tested durability, and cooling performance your Mercury engine was built for.