93102-43M42 Yamaha Oil Seal | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Upper Crankshaft Oil Seal - Part Number: 93102-43M42

A genuine Yamaha SD-type upper crankshaft oil seal for selected 20HP to 60HP four-stroke outboards.

The seal fits around the upper crankshaft and retains engine oil within the cylinder block while preventing dirt, moisture and crankcase vapour leakage.

⚙️ Key Features

• Genuine Yamaha OEM crankshaft oil seal

• Correct Yamaha part number 93102-43M42

• Used on two-cylinder, three-cylinder and four-cylinder four-stroke engines

• Shared with selected Mercury, Mariner and Parsun outboards

• WSM and Parsun replacements available

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 93102-43M42 current Yamaha OEM service reference

OEM / Related Numbers:

• 93102-43M42

• 93102-43M42-00

• 9310243M4200

• Mercury / Mariner: 26-825027

• Mercury / Mariner: 825027

• Mercury / Mariner: 26-893949

• Mercury / Mariner: 893949

• Mercury / Mariner: 8M0151047

Aftermarket / Verified Equivalents:

• WSM: 552-36

• Parsun: PAF25-05020003

• Offshore Marine: 122-17-93M42

• Mercury / Mariner: 8M0151047

🚤 Compatibility

Commonly used on:

• Yamaha and Mercury four-stroke crankshaft and cylinder-block assemblies

Typically suits:

• Engine models:

• Yamaha F20 and F20A

• Yamaha F25A, F25D and T25 / FT25

• Yamaha F30A and F30 four-stroke

• Yamaha F40A, F40B and F40 four-stroke

• Yamaha F45 regional applications

• Yamaha F50A, F50F and T50 / FT50

• Yamaha F60A, F60C and T60 / FT60

• Mercury / Mariner 25HP to 60HP four-stroke engines using 825027, 893949 or 8M0151047

• Parsun F20, F25, F40, F50 and F60 crankshaft assemblies

• HP Range: 20HP - 60HP

• Engine Type: Yamaha / Mercury / Mariner / Parsun four-stroke outboard

• Year Range: Approximately 1996 - 2021, dependent on engine family

🔌 Function

The seal retains engine oil around the upper crankshaft and prevents contamination or vapour leakage through the crankshaft opening.

Common signs of failure:

• Engine oil leaks near the flywheel or crankshaft

• Oil mist accumulates beneath the top cowl

• Crankshaft seal lip becomes hardened or worn

• Engine oil level drops without an external sump leak

• Seal is damaged during crankshaft or powerhead servicing

📦 Condition

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging