Mercury – Drive Gear Bearing Assembly | Bravo Series Sterndrives | Precision Roller Bearing | 8M0104358

Overview

Anyone who spends real time on the water knows this truth: smooth, predictable power is everything. When you throttle up, you want your sterndrive to respond cleanly—with no chatter, no hesitation and no unsettling vibrations. That feeling of confidence comes from more than horsepower alone. It comes from the unseen components inside your drive that carry the load day after day. The Quicksilver 8M0104358 Drive Gear Bearing Assembly is one of those parts you rarely think about… until you need it. Built for the Bravo I, II, III and XR sterndrive series, it restores that quiet, steady strength you depend on every time you leave the dock.

Key Features

• Designed for use on MerCruiser Bravo I, Bravo II, Bravo III and Bravo XR sterndrives
• Four-piece kit includes roller bearing assembly and outer race
• Engineered for smooth, efficient gear rotation under heavy load
• Manufactured to Mercury Marine original equipment specifications
• Durable build designed to handle high torque and long running seasons

Engine & Boat Compatibility

• Fits MerCruiser Bravo I, II, III, X and XR sterndrives
• Suitable for V6 and V8-powered boats running Bravo drives
• Common on sport boats, performance cruisers, bowriders, offshore center consoles and runabouts
• Ideal for boats that see mixed use—slow trolling, long cruise days and hard acceleration

Performance & Practical Benefits

A healthy sterndrive relies on precision gear movement. If your bearings start to fail, you will hear it long before you see it—little knocks, extra vibration, noise under load. The 8M0104358 assembly brings everything back into alignment. The roller bearing design supports tight, smooth rotation, helping the gearset transfer power efficiently without binding or chatter.

Out on the water, that translates to a ride that feels steadier and more predictable. Shifts become cleaner. Acceleration feels stronger and more confident. Your drive runs cooler, thanks to less friction and more balanced load distribution. And because this kit includes both the bearing assembly and outer race, you are restoring the full contact surface—not just swapping out one worn component.

Durability is where Quicksilver shines. These bearings are built to handle the torque and heat that come with long days on the water, whether you are cruising steadily or pushing your boat hard. They hold up in saltwater, freshwater and everything in between, giving you the reliability that veteran boaters insist on.

Why Buy OEM

With internal drive components, shortcuts cost more in the long run. This OEM Quicksilver assembly is engineered specifically for Bravo sterndrives, ensuring exact fit, proper tolerances and the long-term durability that aftermarket bearings simply cannot match. You will protect your gearset, reduce wear and avoid the expensive repairs that come from misaligned or low-quality components. It is the smart choice when you want performance without compromise.

FAQ Section

Q1: Which engines or systems does this bearing assembly fit?

It fits MerCruiser Bravo I, II, III, X and XR sterndrives.

Q2: What sets this apart from aftermarket bearings?

Precision machining, tighter tolerances and OEM-level durability designed specifically for Bravo drives.

Q3: How do I confirm this is the correct replacement?

Check your sterndrive model and consult your owner’s manual for confirmation.

Q4: Can this part be used in both saltwater and freshwater?

Absolutely—it is engineered for long-term durability in all marine environments.

Q5: Is installation straightforward for most boat owners?

Installation typically requires mechanical experience; many owners choose to have a technician install it.