# 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

## Details

- **Price:** 32.0 AUD
- **Vendor:** Yamaha
- **Tags:** Yamaha Marine Parts | Outboard Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 32.00 AUD | In stock |

## Images

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

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/93102-43m42-oil-seal)
> Updated: 2026-07-11