8M0134492 Mercury MerCruiser Water Pump Housing | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Upper Water Pump Housing - Part Number: 8M0134492

A genuine Quicksilver upper water pump housing used on Mercury 9.9HP, 10HP, 15HP and 20HP EFI FourStroke outboards. This housing is used in the lower-unit water pump assembly and has related replacement reference 8M0172920 in later service applications.

⚙️ Key Features

• Genuine Quicksilver OEM water pump housing

• Correct Mercury part number 8M0134492

• Upper water pump / impeller housing

• Fits Mercury 9.9HP, 10HP, 15HP and 20HP EFI FourStroke outboards where specified

• Related later reference 8M0172920

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 8M0172920 later related replacement reference

• 8M0134492 OEM water pump housing reference

OEM / Related Numbers:

• 8M0134492

• Mercury 8M0134492

• Quicksilver 8M0134492

• 8M0172920

• Upper water pump housing

• Impeller housing

• Water pump housing

• 47-8M0135821 related impeller reference

• 8M0151470 related water pump repair kit family reference

• 27-8M0177107 related thermostat gasket in the same small EFI service family

Aftermarket / Verified Equivalents:

• Aftermarket water pump housings are available where matched directly to 8M0134492 / 8M0172920

🚤 Compatibility

Commonly used on:

• Mercury 9.9HP EFI FourStroke lower-unit water pump assemblies

• Mercury 10HP EFI FourStroke lower-unit water pump assemblies

• Mercury 15HP EFI FourStroke lower-unit water pump assemblies

• Mercury 20HP EFI FourStroke lower-unit water pump assemblies

• Tohatsu-built MFS 9.9 / 15 / 20 EFI style gearcase applications sold under Mercury where specified

Typically suits:

• Engine models:

• Mercury 9.9HP EFI FourStroke - serial 0R833820 and up where 8M0134492 is specified

• Mercury 9.9HP ProKicker EFI FourStroke - serial 0R833820 and up where specified

• Mercury 10HP EFI FourStroke - serial 0R833820 and up where specified

• Mercury 15HP EFI FourStroke - serial 0R833820 and up where specified

• Mercury 20HP EFI FourStroke - serial 0R833820 and up where specified

• Mercury 15HP / 20HP EFI 333cc FourStroke lower-unit water pump applications using housing 8M0134492

• Mercury small EFI FourStroke water pump assemblies using related repair kit 8M0151470 / 8M0135821 service family

• HP Range: commonly 9.9HP - 20HP EFI where specified

• Engine Type: Mercury EFI FourStroke outboard

• System Type: Lower-unit water pump / upper impeller housing

🔌 Function

The water pump housing surrounds the impeller and forms the pump chamber that draws cooling water from the lower unit and sends it up to the engine.

Common signs of failure:

• Engine overheating

• Weak tell-tale water stream

• Housing melted, grooved or distorted

• Impeller replaced but cooling remains poor

• Pump housing damaged by dry running

• Replacement required during full water pump rebuild

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging