Mercury – Quicksilver 8M0204670 Bearing Carrier Seal | Quicksilver Marine Components | Stainless Steel | 8M0204670

Overview

When you’re out on the water, you don’t think much about the small parts buried deep inside the gearcase — until one of them fails. A good bearing carrier seal is one of those unsung heroes that keeps your engine running smooth and your mind at ease. The Quicksilver Bearing Carrier Seal, part number 8M0204670, is built for boaters who’d rather spend their day chasing open water than worrying about water intrusion sneaking into the gearcase. It’s a simple part, sure, but it carries a big responsibility: keeping your prop shaft area tight, clean, and protected no matter what the day throws at you.

There’s comfort in knowing the seal guarding your gearcase is engineered for the harsh marine world you actually live in — not a calm test basin. This one just works, and that’s exactly what you want from a part you’ll never see once it’s installed.

Key Features

• Designed to prevent water intrusion around the prop shaft
• Durable stainless steel construction for long-term dependability
• Fits a wide range of outboard and MerCruiser bearing carriers
• Built to maintain proper seal pressure under load
• Engineered to support smooth drivetrain operation

Engine & Boat Compatibility

• Fits Mercury outboard bearing carriers
• Fits MerCruiser sterndrive bearing carriers
• Common on fishing boats, offshore center consoles, pontoons, bowriders, and sport boats
• Suitable for both recreational and commercial applications

Performance & Practical Benefits

A reliable bearing carrier seal doesn’t draw attention to itself — and that’s the whole point. Once installed, this stainless steel Quicksilver seal sits tight and stays tight, keeping the gearcase interior free from the corrosive impact of water intrusion. You’ll notice the difference not as a dramatic change, but as the steady confidence that comes from knowing your lower unit is sealed properly.

Because it’s built from marine-grade stainless steel, the seal resists deformation, rust, and wear. Even after long runs, high RPMs, or pushing through chop, it stays seated and delivers clean, consistent sealing pressure. Installers appreciate how well it fits the carrier without forcing or fighting, and boaters appreciate that the engine keeps performing exactly the way it should — smooth, steady, and predictable.

Whether you’re running shallow bays, towing kids on a tube, or pushing offshore to chase bigger fish, this small component protects your drivetrain from a very big problem.

Why Buy OEM

OEM matters when it comes to parts that protect your engine’s internals. Quicksilver’s bearing carrier seal is manufactured to the same standards as Mercury Marine components, meaning it fits right the first time and holds up season after season. Aftermarket seals often miss small but critical tolerances, leading to premature wear or leaks. With this OEM seal, you’re buying long-term reliability — not a short-term fix.

For a part designed to guard your gearcase, that reliability is worth every penny.

FAQ

Q1: Which engines does this seal fit?

It fits Mercury outboard and MerCruiser sterndrive bearing carriers.

Q2: What sets this seal apart from aftermarket versions?

The precision fit, stainless steel construction, and proven marine durability make it a smarter, longer-lasting choice.

Q3: How do I know if this is the correct replacement?

Check that your engine uses a Quicksilver bearing carrier; part number 8M0204670 is the correct OEM replacement for many models.

Q4: Can it be used in saltwater and freshwater?

Absolutely. The stainless steel build handles both environments without issues.

Q5: Is installation straightforward?

Yes. Most boat owners familiar with gearcase service find the replacement simple with standard tools.