93210-86M39 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Propeller Shaft Housing and Bearing Carrier O-Ring - Part Number: 93210-86M39

A genuine Yamaha lower-unit O-ring used to seal the propeller-shaft housing or bearing carrier on selected 50HP to 175HP outboards.

The O-ring fits around the outside of the carrier assembly and prevents water intrusion and gear-oil leakage at the carrier-to-gearcase joint.

⚙️ Key Features

• Genuine Yamaha OEM lower-unit carrier O-ring
• Correct Yamaha part number 93210-86M39
• Used on selected mid-range and V4 gearcases
• Installed with the propeller-shaft bearing-carrier assembly
• GLM and direct aftermarket replacements available

🚤 Compatibility

Commonly used on

• Yamaha mid-range propeller-shaft bearing carriers
• Yamaha 67F and 6E5-series lower units

Typically suits

• Engine models:
• Yamaha 50HP and 55HP gearcases where specified
• Yamaha 60HP and 70HP
• Yamaha 75HP, 80HP, 85HP and 90HP
• Yamaha F75, F80, F90 and F100 four-stroke
• Yamaha 100HP, 115HP, 130HP, 150HP and 175HP lower units using the matching carrier
• Yamaha F80BET 2010
• Yamaha F100DET 2010
• HP Range: Commonly 50HP - 175HP
• Engine Type: Yamaha two-stroke and four-stroke outboard
• Year Range: Approximately 1984 onward, dependent on carrier diameter

🔌 Function

The O-ring seals the bearing carrier to the gearcase housing, preventing water from bypassing around the carrier.

⚠️ Common Signs of Failure

• Gear oil leaks at the carrier joint
• Lower-unit lubricant becomes milky
• Carrier area shows salt or corrosion deposits
• Gearcase fails pressure testing
• O-ring is cut during carrier installation

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 93210-86M39 current Yamaha OEM service reference

OEM / Related Numbers

• 93210-86M39
• 93210-86M39-00
• 9321086M3900
• 93101-25M03 related shaft oil seal
• 688-45383-02 related claw washer
• 688-45384-series related carrier retaining nut

Aftermarket / Verified Equivalents

• GLM: 84250
• Direct replacement carrier O-ring: 93210-86M39
• Aftermarket 50HP to 175HP lower-unit O-ring

📦 Condition

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