Mercury – Quicksilver 823894 J-Joint Seal | MerCruiser Sterndrives | 823894

Overview

Keeping water out and performance up starts with the right seal. The Quicksilver 823894 J-Joint Seal is a genuine OEM part designed for a wide range of MerCruiser sterndrives, both vintage and modern — including IA, IB, IC, EZ Shift, 120/140, 470/485, 160/165, 888, 898/228/250/260, R, MR, Alpha One, Alpha One SS, and Alpha One Gen II.

This durable seal prevents water intrusion between critical housing components, helping your drive maintain top efficiency and longevity. Built from high-grade marine materials, it fits exactly as the factory intended and stands up to years of use in salt or freshwater.

Key Features

• Purpose: Prevents leaks and water intrusion in MerCruiser sterndrive assemblies.
• Fitment: For MerCruiser IA, IB, IC, EZ Shift, 120/140, 470/485, 160/165, 888, 898/228/250/260, R, MR, Alpha One, Alpha SS, and Alpha One Gen II drives.
• Construction: Made from marine-grade rubber and sealing compounds designed for longevity and flexibility.
• OEM Precision: Manufactured to Mercury Marine factory specs for perfect fit and lasting seal integrity.
• Installation: Direct replacement — fits seamlessly into the original joint housing.

Engine & Boat Compatibility

• Compatible with a broad range of MerCruiser sterndrive models (from early IA units to Alpha One Gen II)
• Common on classic cruisers, runabouts, and modern sterndrive setups

Performance & Real-World Benefits

The 823894 J-Joint Seal keeps your drive watertight, preventing internal corrosion, gear wear, and contamination of lubricants. A good seal ensures smoother operation and consistent power transfer.

Replacing worn or cracked seals is simple maintenance that prevents costly damage later. Once installed, you’ll have peace of mind knowing your drive is properly protected against leaks — even after long hours in the water.

Why Choose OEM

Mercury’s OEM seals are made from premium materials that resist swelling, cracking, and breakdown caused by heat and oil. Aftermarket alternatives often don’t seal as tightly, which can lead to leaks or premature failure.

A genuine Quicksilver seal gives you the correct fit and durability your MerCruiser was built for — no guesswork, no shortcuts.

FAQ

Q1: What drives fit the Quicksilver 823894 J-Joint Seal?
A: It fits MerCruiser IA, IB, IC, EZ Shift, 120/140, 470/485, 160/165, 888, 898/228/250/260, R, MR, Alpha One, Alpha SS, and Alpha One Gen II drives.

Q2: What does a J-Joint Seal do?
A: It prevents water from entering the sterndrive assembly and protects internal parts from corrosion.

Q3: Can I install it myself?
A: Yes. It’s a direct-fit OEM seal that installs using standard marine tools.

Q4: Is it durable in saltwater?
A: Absolutely — it’s built with marine-grade materials that resist salt, heat, and oil exposure.

Q5: Why OEM instead of aftermarket?
A: OEM seals fit precisely and last longer, providing the leak-free protection Mercury engines rely on.