93210-46M16 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Upper Crankshaft Bearing Housing O-Ring - Part Number: 93210-46M16

A genuine Yamaha engine O-ring used around the upper crankshaft bearing, oil-seal housing or crankcase end-cap assembly of selected two-cylinder and three-cylinder two-stroke outboards.

The O-ring seals the circular bearing-housing joint, preventing crankcase pressure, fuel-and-oil mixture and lubricating residue from escaping around the crankshaft support assembly.

⚙️ Key Features

• Genuine Yamaha OEM crankshaft-housing O-ring
• Correct Yamaha part number 93210-46M16
• Used in two-cylinder and three-cylinder two-stroke powerheads
• Resistant to oil, fuel mixture, heat and crankcase pressure
• WSM, Cometic, Recmar and aftermarket replacements available

🚤 Compatibility

Commonly used on

• Yamaha two-stroke crankshaft and piston assemblies
• Upper crankshaft bearing and seal-housing joints
• Two-cylinder and three-cylinder crankcase assemblies

Typically suits

• Engine models:
• Yamaha 9.9HP two-cylinder two-stroke
• Yamaha 13.5HP two-stroke
• Yamaha 15HP two-cylinder two-stroke
• Yamaha 25HP two-stroke
• Yamaha 30HP two-stroke
• Yamaha 40HP three-cylinder two-stroke
• Yamaha 50HP three-cylinder two-stroke
• Yamaha 60HP three-cylinder two-stroke
• Yamaha 70HP three-cylinder two-stroke
• Yamaha 75HP three-cylinder two-stroke
• Yamaha 80HP three-cylinder two-stroke
• Yamaha 85HP three-cylinder two-stroke
• Yamaha 90HP three-cylinder two-stroke
• Yamaha 15MSH, 70TLR, 75A, 80A, 85A, 90A and C90 engine families
• HP Range: Approximately 9.9HP - 90HP
• Engine Type: Yamaha two-cylinder and three-cylinder carburetted two-stroke outboard
• Year Range: Approximately 1980s through the late 2000s, dependent on crankshaft assembly.

🔌 Function

The O-ring seals the crankshaft bearing or end-cap housing to the crankcase, maintaining crankcase compression and preventing oil-and-fuel residue from leaking around the housing.

⚠️ Common Signs of Failure

• Oil or fuel residue around the crankcase joint
• Loss of crankcase sealing
• Poor idle or reduced cylinder performance
• O-ring is flattened, hardened or split
• Leakage begins after crankshaft or bearing service

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 93210-46M16 current Yamaha engine O-ring reference

OEM / Related Numbers

• 93210-46M16
• 93210-46M16-00
• Yamaha upper crankshaft O-ring
• Yamaha crankshaft and piston assembly O-ring
• S18-76690 aftermarket reference

Aftermarket / Verified Equivalents

• WSM: 527-10A5
• Cometic: 10-2223
• Recmar: REC93210-46M16
• ComponentsPlus: 527-10A5
• Aftermarket Yamaha engine O-ring: 93210-46M16 replacement

📦 Condition

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