93210-49046 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Lower-Unit Carrier and Shift Shaft Plate O-Ring - Part Number: 93210-49046

A genuine Yamaha lower-unit O-ring used in several carrier, water-pump and shift-shaft sealing positions.

Depending on the gearcase, the O-ring may seal the forward bearing carrier, propeller-shaft seal housing, water-pump base or gear-selector shaft plate.

⚙️ Key Features

• Genuine Yamaha OEM lower-unit O-ring
• Correct Yamaha part number 93210-49046
• Used in bearing-carrier, water-pump and shift-shaft assemblies
• Resistant to gear oil and marine-water exposure
• PROMT, Recmar and aftermarket equivalents available

🚤 Compatibility

Commonly used on

• Yamaha forward bearing-carrier assemblies
• Shift-shaft plate and gear-selector shaft carriers
• Selected water-pump and lower-unit seal housings

Typically suits

• Engine models:
• Yamaha 6HP and 8HP two-stroke lower units
• Yamaha F8C four-stroke bearing carrier
• Yamaha F9.9F four-stroke bearing carrier
• Yamaha F9.9H water-pump assembly
• Yamaha F15A water-pump assembly
• Yamaha F20B water-pump assembly
• Yamaha 40HP two-stroke lower units
• Yamaha 50HP two-stroke lower units
• Yamaha 55HP lower-unit applications
• Yamaha 70HP lower units
• Yamaha 75HP, 80HP, 85HP and 90HP lower units
• Yamaha FT50G gear-selector shaft carrier
• HP Range: Selected 6HP - 20HP and 40HP - 90HP applications
• Engine Type: Yamaha two-stroke and four-stroke outboard
• Year Range: Approximately mid-1980s onward, dependent on the sealing location.

🔌 Function

The O-ring seals the relevant carrier, plate or pump housing to prevent gear lubricant, cooling water or external water from crossing the housing joint.

⚠️ Common Signs of Failure

• Gear oil leaks from the lower unit
• Gear lubricant becomes milky
• Shift-shaft plate leaks during pressure testing
• Water-pump pressure is reduced
• O-ring is flattened, twisted or cut during assembly

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 93210-49046 current Yamaha lower-unit O-ring reference

OEM / Related Numbers

• 93210-49046
• 93210-49046-00
• 9321049046
• 18-71333 aftermarket reference
• 93101-15074 related propeller-shaft oil seal
• 93101-11M23 related shaft oil seal

Aftermarket / Verified Equivalents

• PROMT Parts: PP-93210-49046
• Recmar: REC93210-49046
• Marine Spare Parts: AM93210-49046
• Aftermarket lower-unit O-ring replacing 93210-49046

📦 Condition

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