8M0079167 Mercury MerCruiser 8M0079167 Gasket | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Thermostat Cover Gasket - Part Number: 27-8M0079167

Genuine Quicksilver thermostat cover gasket used on Mercury-built MerCruiser 4.5L MPI and 6.2L MPI engines. This gasket seals the thermostat cover to the housing and should be replaced whenever the thermostat cover is removed for inspection, thermostat replacement or cooling-system service.

⚙️ Key Features

• Genuine Quicksilver OEM thermostat cover gasket

• Correct Mercury part number 27-8M0079167

• Listing reference: 8M0079167

• Used on MerCruiser 4.5L MPI and 6.2L MPI engines

• Seals thermostat cover / housing joint

• Recommended replacement during thermostat service

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 27-8M0079167 current OEM thermostat cover gasket reference

• 8M0079167 short-form gasket reference

OEM / Related Numbers:

• 27-8M0079167

• 8M0079167

• Thermostat cover gasket

• 4.5L / 6.2L thermostat gasket

• MerCruiser thermostat housing gasket

• 27-8M0082419 related gasket in Mercury-built engine service family

• 10-40095110 related M8 x 110 screw family reference

• 8M6004772 related valve seal family reference

Aftermarket / Verified Equivalents:

• Aftermarket thermostat cover gasket equivalents may be available by direct 27-8M0079167 match

• Use exact gasket profile for Mercury-built 4.5L / 6.2L thermostat covers

• Do not substitute older GM V6 / V8 thermostat gaskets; Mercury-built 4.5L and 6.2L engines use different gasket profiles

🚤 Compatibility

Commonly used on:

• MerCruiser 4.5L MPI thermostat cover assemblies

• MerCruiser 6.2L MPI thermostat cover assemblies

• Mercury-built MerCruiser engine cooling systems

• Thermostat inspection and replacement service

Typically suits:

• Engine models:

• MerCruiser 4.5L MPI Alpha / Bravo thermostat cover applications

• MerCruiser 4.5L MPI EC thermostat cover applications

• MerCruiser 4.5L MPI Alpha 250HP service families where 27-8M0079167 is specified

• MerCruiser 4.5L MPI Bravo 250HP service families where specified

• MerCruiser 6.2L MPI Alpha / Bravo thermostat cover applications

• MerCruiser 6.2L MPI EC thermostat cover applications

• MerCruiser 6.2L MPI 300HP / 350HP service families where 27-8M0079167 is specified

• Mercury-built MerCruiser 4.5L V6 and 6.2L V8 thermostat housings using gasket 27-8M0079167

• Engine Type: Mercury-built MerCruiser 4.5L MPI V6 and 6.2L MPI V8 petrol engines

• System Type: Thermostat cover gasket / cooling-system gasket

🔌 Function

The gasket seals the thermostat cover to the housing to prevent cooling-water leakage around the thermostat cavity and maintain correct thermostat operation.

Common signs of failure:

• Water leaking around thermostat cover

• Gasket torn during cover removal

• Salt or corrosion around thermostat housing

• Thermostat service requires reseal

• Cooling-system leak after thermostat replacement

• Old gasket flattened or not reusable

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging