812966A7 Mercury MerCruiser Water Pump Seal Housing | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Pump Base / Seal Housing Assembly - Part Number: 46-812966A7

A genuine Quicksilver water pump base and seal housing assembly for selected Mercury and Mariner outboards. This base assembly supports the water pump housing, seals the driveshaft area and helps maintain correct cooling water pressure through the outboard cooling system.

⚙️ Key Features

• Genuine Quicksilver OEM water pump base assembly

• Correct Mercury part number 46-812966A7

• Includes seal housing / pump base design for lower-unit water pump service

• Used on selected 30HP to 60HP Mercury FourStroke and 40HP to 60HP outboard applications

• Helps restore correct water pump sealing, water pressure and cooling performance

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 46-812966A7 → Supersedes 46-812966A9

• 46-812966A7 → Supersedes 46-812966A3

• 46-812966A3 earlier OEM reference

OEM / Related Numbers:

• 46-812966A7

• 812966A7

• 46-812966A9

• 812966A9

• 46-812966A3

• 812966A3

• 812966 A7

Aftermarket / Verified Equivalents:

• Sierra: 18-3445

• GLM: 12352

• SouthMarine: 46-812966A7 equivalent

🚤 Compatibility

Commonly used on:

• Mercury / Mariner outboard water pump base and seal carrier applications

Typically suits:

• Engine models:

• Mercury 30 EFI 3-cylinder FourStroke

• Mercury 40 EFI 3-cylinder FourStroke

• Mercury 40 Carb 3-cylinder FourStroke

• Mercury 40 EFI 4-cylinder FourStroke / Jet

• Mercury 50 EFI 4-cylinder FourStroke

• Mercury 60 EFI 4-cylinder FourStroke

• Mercury 40 Carb 4-cylinder FourStroke

• Mercury 50 Carb 4-cylinder FourStroke

• Mercury 60 Carb 4-cylinder FourStroke

• Mercury 40 Jet 3-cylinder

• Mercury 45 Jet 3-cylinder

• Mercury 55 3-cylinder

• Mercury 60 3-cylinder

• Mercury 60 3-cylinder BigFoot

• Mercury Formula 60 4-cylinder FourStroke

• Mariner 30HP to 60HP outboard lower-unit water pump applications where 46-812966A7 is specified

• Mercury / Mariner 70HP to 75HP seal carrier applications where 812966A7 is specified

• HP Range: 30HP - 60HP primary FourStroke range, with additional 70HP - 75HP seal carrier applications where specified

• Engine Type: Mercury / Mariner outboard

• System Type: Lower-unit water pump base / seal housing assembly

🔌 Function

The water pump base / seal housing supports the impeller housing and seals the driveshaft area so the water pump can maintain correct cooling water flow and pressure.

Common signs of failure:

• Engine overheating at idle or under load

• Weak tell-tale water flow

• Water pump pressure loss after impeller replacement

• Cracked, distorted or worn pump base

• Oil or water leakage around the lower-unit water pump base

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging