468M0077147 Mercury MerCruiser Base Water Pump | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Pump Base Assembly - Part Number: 46-8M0077147

A genuine Quicksilver water pump base assembly for selected Mercury and Mariner 2.0L and 2.5L V6 2-stroke outboard water pump systems. This base assembly supports the pump housing, seals the lower pump area and helps maintain correct cooling water pressure through the gearcase-mounted water pump.

⚙️ Key Features

• Genuine Quicksilver OEM water pump base assembly

• Correct Mercury part number 46-8M0077147

• Supersedes earlier Mercury 46-42579A3 base assembly

• Used on selected Mercury / Mariner 105 Jet through V220 Laser applications

• Helps restore water pump sealing and correct cooling system pressure

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 46-8M0077147 → Supersedes 46-42579A3

• 46-42579A3 earlier OEM reference

OEM / Related Numbers:

• 46-8M0077147

• 8M0077147

• 468M0077147

• 46-42579A3

• 42579A3

Aftermarket / Verified Equivalents:

• Sierra: 18-3419

• GLM: 12360

• Mallory: 9-43307

• Recmar: REC46-8M0077147

🚤 Compatibility

Commonly used on:

• Mercury and Mariner V6 2-stroke EFI, DFI and Jet outboard water pump base applications

Typically suits:

• Engine models:

• Mercury / Mariner 105 Jet, USA, 1994-1995 - serial 0D082000 and up

• Mercury / Mariner 105 Jet, Belgium, 1994-1995 - serial 9682500 and up

• Mercury 105 Jet - serial 0D182000 and up

• Mercury / Mariner 140 Jet, USA, 1994-1995 - serial 0D082000 and up

• Mercury / Mariner 140 Jet, Belgium, 1994-1995 - serial 9682500 and up

• Mercury 140 Jet - serial 0D082000 and up

• Mercury / Mariner V-135 Carb, USA, 1986-1988 - serial 0A904646 and up

• Mercury / Mariner V-135 DFI, USA, 1998 - serial 0G590000 and up

• Mercury / Mariner V-150 Carb, USA, 1978-1985 applications using 46-8M0077147

• Mercury / Mariner V-150 Carb / EFI / DFI, USA, 1986-1988 - serial 0A904646 and up

• Mercury / Mariner V-150 XR2 / XR4 / XR6 / Magnum II / Magnum III, USA, 1978-1988 - serial 0A904646 and up

• Mercury / Mariner V-175 / V1750, USA, 1976-1981 - serial 6618751 and up

• Mercury / Mariner V-200 - serial 6625221 and up

• Mercury / Mariner V-220 Laser applications using 46-8M0077147

• Mercury XR4 applications using 46-8M0077147

• Mercury XR6 applications using 46-8M0077147

• Mercury Magnum II / Magnum III applications using 46-8M0077147

• HP Range: 105 Jet through V220 Laser

• Engine Type: Mercury / Mariner V6 2-stroke outboard

• System Type: Lower-unit water pump base assembly

🔌 Function

The water pump base supports the water pump housing and seals the lower side of the pump assembly so the impeller can build correct water pressure.

Common signs of failure:

• Weak tell-tale water flow

• Engine overheating after impeller replacement

• Water pump base cracked, warped or corroded

• Poor sealing around the lower pump assembly

• Gearcase water pump pressure loss under load

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging