93210-59MG7 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Water Pump Housing O-Ring - Part Number: 93210-59MG7

A genuine Yamaha lower-unit O-ring for selected 25HP to 60HP water-pump housings.

The O-ring seals the pump housing, pump base or lower-unit water passage, preventing air from entering the impeller chamber and stopping pressurised cooling water from escaping around the housing.

⚙️ Key Features

• Genuine Yamaha OEM water-pump housing O-ring

• Correct Yamaha part number 93210-59MG7

• Used on selected 25HP to 60HP outboards

• Resistant to seawater, heat and pump pressure

• Sierra, Recmar and aftermarket replacements available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 93210-59MG7 current Yamaha water-pump O-ring reference

OEM / Related Numbers:

• 93210-59MG7

• 93210-59MG7-00

• 9321059MG700

• Water-pump housing seal

• Lower-unit pump-housing O-ring

Aftermarket / Verified Equivalents:

• Sierra: 18-71334

• Recmar: REC93210-59MG7

• Marine Spare Parts: AM93210-59MG7

• SeaSierra: 93210-59MG7 replacement O-ring

🚤 Compatibility

Commonly used on:

• Yamaha water-pump housing assemblies

• Mid-range lower-unit pump bases and cooling-water passages

Typically suits:

• Engine models:

• Yamaha 25HP outboards

• Yamaha 30HP outboards

• Yamaha 40HP two-stroke and four-stroke

• Yamaha E40X

• Yamaha F40

• Yamaha 50HP two-stroke

• Yamaha C50

• Yamaha F50 four-stroke

• Yamaha T50 high-thrust

• Yamaha F60 four-stroke

• Yamaha T60 high-thrust

• Parsun F40 lower units using the Yamaha-pattern pump housing

• HP Range: 25HP - 60HP

• Engine Type: Yamaha two-stroke and four-stroke outboard

• Year Range: Approximately 1990s onward, dependent on pump-housing design.

🔌 Function

The O-ring seals the water-pump housing so the impeller can create the suction and discharge pressure required to circulate cooling water.

Common signs of failure:

• Weak tell-tale stream

• Engine overheats at idle

• Air enters around the pump housing

• Water pressure remains low after fitting a new impeller

• O-ring is flattened, swollen or pinched

📦 Condition

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging