812966A7 Water Pump Base Assembly – Mercury / Mariner 30-60HP & 70-75HP Seal Carrier

The 812966A7 Water Pump Base Assembly (seal carrier) is an OEM component for Mercury / Mariner / Force outboards in the 30-60 HP range (3- and 4-cylinder models), and some 70-75 HP variants. It houses the pump base and essential seals / O-rings, forming a critical part of the cooling system.

Compatibility & Fitment:

• OEM / Mercury part numbers: 46-812966A7, 812966A7

• Cross references: 46-812966A9, 812966A3, Sierra 18-3445, GLM 12352, Mallory 9-43330

• Fits models like Mercury FourStroke 30-40HP EFI 3-cyl, 40-60HP EFI/Carb 4-cyl, etc.

Why It’s Essential:
Without a properly sealed pump base, water cooling will be compromised, leading to overheating and damage. Replacing worn or damaged assemblies ensures reliable cooling and performance.

Shop at Arizona Outboard Dismantlers for the parts you need to stay on the water like this 812966A7 Water Pump Base Assembly.