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

🚤 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

🔄 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

📦 Condition

• Genuine Yamaha part
• Brand new
• Supplied in original or equivalent packaging