8M0090319 Mercury MerCruiser Water Pump Gasket | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Pump Gasket - Part Number: 27-8M0090319

A genuine Quicksilver water pump gasket used on selected MerCruiser stern drives and Mercury / Mariner outboard water pump assemblies. This gasket supersedes earlier Mercury 27-856081 / 27-85608 and related 27-32433 / 27-30603 references in supported water pump applications.

⚙️ Key Features

• Genuine Quicksilver OEM water pump gasket

• Correct Mercury part number 27-8M0090319

• Supersedes earlier 27-856081 / 27-85608 gasket references

• Used on selected MerCruiser stern drive water pump assemblies

• Also used on Mercury / Mariner 90HP to 200HP two-stroke outboard water pump applications where specified

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 27-8M0090319 → Supersedes 27-856081

• 27-856081 → Related to 27-85608

• 27-85608 earlier OEM water pump gasket reference

• 27-32433 earlier related water pump gasket reference

• 27-30603 earlier related water pump gasket reference

OEM / Related Numbers:

• 27-8M0090319

• 8M0090319

• 278M0090319

• 27-856081

• 856081

• 27-85608

• 85608

• 27-32433

• 32433

• 27-30603

• 30603

• 27-856704 related water pump to gear housing gasket

• 47-8M0104229 related impeller kit in later water pump service family

Aftermarket / Verified Equivalents:

• Sierra: 18-2914

• SEI Marine: 95-102-12

• GLM: 31010

• Mallory: 9-60034

🚤 Compatibility

Commonly used on:

• MerCruiser stern drive water pump assemblies

• Mercury / Mariner 90HP to 200HP 2-cycle outboard water pump assemblies

• Water pump repair work where gasket 27-30603 / 27-32433 / 27-85608 / 27-856081 / 27-8M0090319 is specified

Typically suits:

• Engine / drive models:

• MerCruiser Alpha stern drive water pump applications where 27-8M0090319 is specified

• MerCruiser MR / Alpha One water pump applications where 27-32433 / 27-8M0090319 is specified

• MerCruiser Alpha One Gen II water pump applications where 27-856081 / 27-8M0090319 is specified

• Mercury 90HP 3-cylinder 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury 90HP 6-cylinder 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury 100HP 4-cylinder 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury 115HP 4-cylinder 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury 115HP 6-cylinder 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury 125HP 4-cylinder 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury V-135 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury V-150 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury V-150 EFI / DFI 2.5L water pump applications where 27-8M0090319 is specified

• Mercury V-175 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury V-175 EFI / DFI 2.5L water pump applications where 27-8M0090319 is specified

• Mercury V-200 2-stroke water pump applications where 27-8M0090319 is specified

• Mercury V-200 EFI / DFI 2.5L water pump applications where 27-8M0090319 is specified

• Mariner 90HP to 200HP 2-cycle outboard water pump applications using the Mercury gasket family 27-8M0090319 where specified

• HP Range: commonly 90HP - 200HP 2-cycle outboard, plus MerCruiser Alpha-family stern drive water pump applications where specified

• Engine / Drive Type: Mercury / Mariner outboard and MerCruiser stern drive

• System Type: Water pump gasket / gearcase cooling pump gasket

🔌 Function

The gasket seals the water pump assembly to prevent pressure loss and water leakage around the pump housing or gearcase mating surface.

Common signs of failure:

• Weak tell-tale or cooling water output

• Water pump not priming correctly after service

• Overheating after impeller replacement

• Gasket torn during water pump disassembly

• Water leakage around pump housing

• Replacement required during impeller or water pump rebuild

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging