Mercury – Driveshaft Housing Cover Kit | Structural Component | Marine Polymer & Coated Steel | 879150A90

Overview

A well-maintained outboard doesn’t just run better—it feels better every time you lower it into the water. The driveshaft housing plays a big role in that sense of solidity and protection, and a damaged or weathered cover can leave your engine vulnerable. This Mercury Marine cover kit restores that sense of confidence. Once installed, everything feels tighter, more secure, and better shielded from spray and debris. It’s one of those parts you replace not just for function, but for the peace of mind that comes from knowing your engine is properly sealed and protected.

Key Features

• Genuine Mercury replacement cover for lower driveshaft housing.
• Includes cover, clamp, and mounting screws.
• Built from marine-tested polymer and coated steel components.
• Designed for precise fitment on select Mercury 3.0 liter engines.
• Engineered for long-term durability in harsh marine environments.

Engine & Boat Compatibility

• Fits Mercury 3.0 liter 200–250 horsepower EFI two-stroke outboards.
• Compatible with 300 horsepower OptiMax Pro XS and 3.0 liter DFI models.
• Commonly installed on bass boats, performance fishing boats, offshore center consoles, and multi-species rigs.

Performance & Practical Benefits

You’ll feel the difference the moment you secure this cover into place. The fit is snug and precise, restoring the protective shell around the driveshaft housing that keeps internal components shielded from sand, water intrusion, and impact debris. Over time, older covers can loosen, crack, or warp—especially in high-heat or high-vibration environments. This OEM cover returns the engine to its intended tolerance, helping reduce noise, prevent premature wear, and maintain the smooth, steady feel Mercury engines are known for. It installs cleanly with the included hardware, making the upgrade fast and satisfying.

Why Buy OEM

Driveshaft housings aren’t an area where “close enough” works well. The geometry, screw alignment, and sealing surfaces have to match perfectly to protect the engine from long-term damage. Aftermarket covers often fall short—with looser fits, thinner materials, or coatings that degrade quickly. Mercury Marine parts are tested against real-world marine conditions, ensuring the cover holds its shape, resists corrosion, and fits correctly for years. It’s a smart investment that helps maintain the value and reliability of your outboard.

FAQ

Q1: Which engines does this cover kit fit?

It fits select Mercury 3.0 liter 200–250 horsepower EFI two-stroke, 300 horsepower OptiMax Pro XS, and 3.0 liter DSI engines.

Q2: Why OEM instead of aftermarket?

Better materials, tighter tolerances, stronger coatings, and exact fitment designed specifically for Mercury driveshaft housings.

Q3: How do I verify fitment?

Match your engine’s horsepower, model type, and year with the listed compatible models.

Q4: Saltwater safe?

Absolutely—the materials and coatings are built to withstand both salt and freshwater conditions.

Q5: Installation difficulty?

Simple. The kit includes all hardware, and the cover installs with basic tools.