Mercury – Quicksilver 816575A2 Water Pump Face Seal | MerCruiser Alpha One Gen II Drives | 816575A2

Overview

A small seal can make a big difference in how well your boat runs. The Quicksilver 816575A2 Water Pump Face Seal keeps your MerCruiser Alpha One Gen II sterndrive protected by sealing out water where it doesn’t belong and keeping your cooling system tight and efficient.

Made from tough marine-grade nitrile rubber, this seal handles constant pressure, vibration, and heat without breaking down. It’s built to Mercury’s specs and comes with the installation tool you need to get the job done right the first time.

Key Features

• Purpose: Prevents water leaks and keeps proper cooling pressure in the drive housing.
• Fitment: Designed specifically for MerCruiser Alpha One Gen II drives.
• Material: Crafted from nitrile rubber that meets SAE J200 marine standards for lasting flexibility and sealing power.
• Includes: Comes with both the face seal and a tool for proper installation.
• Durability: Built and tested to handle marine heat, pressure, and movement for years of service.

Engine & Boat Compatibility

• Fits all MerCruiser Alpha One Gen II sterndrives
• Common on family cruisers, sport boats, and fishing rigs powered by MerCruiser engines

Performance & Practical Benefits

Your cooling system is only as good as its seals, and this one keeps everything in check. A worn face seal can cause leaks that reduce water pressure or let moisture creep into the drive — both can lead to bigger problems down the line. The 816575A2 restores that watertight seal and helps your cooling system move water efficiently through the pump and drive.

The nitrile rubber stays flexible even after long exposure to heat, oil, and water. It’s the same material Mercury uses in their factory drives because it holds up where others fail. With the included tool, installing it is straightforward and gives you a perfect fit — no guesswork or frustration.

Why Buy OEM

Mercury parts are built for marine life — real heat, vibration, and salt exposure. Cheaper aftermarket seals often look the same but use lower-grade rubber that hardens or leaks after a season or two. An OEM Quicksilver seal fits perfectly and lasts longer, giving you confidence every time you fire up the engine.

When you’re 10 miles out, you don’t want to wonder about the quality of the parts keeping your drive dry — that’s why OEM is worth it.

FAQ

Q1: What drives use this face seal?
A: It’s made for MerCruiser Alpha One Gen II sterndrives.

Q2: What comes with the kit?
A: The kit includes one water pump face seal and an installation tool.

Q3: What’s it made from?
A: High-quality nitrile rubber, chosen for strength and marine sealing performance.

Q4: Can I install it myself?
A: Yes. With the included tool, it’s a simple DIY job for most boat owners.

Q5: How often should it be replaced?
A: Replace it anytime you service the water pump or notice signs of leakage or wear.