# 90430-14M09 Yamaha Sump Washer | Genuine OEM Yamaha Outboard Part

🔧 Product Description

  

Genuine Yamaha Four-Stroke Engine Oil Drain Washer - Part Number: 90430-14M09

  

A genuine Yamaha sump-plug gasket for selected four-stroke outboard engines.

  

The sealing washer fits beneath the engine-oil drain plug and should be renewed during oil changes to prevent leakage around the threaded sump opening.

  

⚙️ Key Features

  

• Genuine Yamaha OEM sump-plug washer

• Correct Yamaha part number 90430-14M09

• Used on Yamaha four-stroke engine-oil drain plugs

• Related to current service washer 90430-14228

• Sierra direct replacement available

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 90430-14M09 original OEM sump-washer reference

• 90430-14228 related current Yamaha service washer for applicable engines

  

OEM / Related Numbers:

  

• 90430-14M09

• 90430-14M09-00

• 90430-14228

• Yamaha engine-oil drain-plug gasket

• Yamaha sump washer

  

Aftermarket / Verified Equivalents:

  

• Sierra: 18-0755

• Aftermarket Yamaha 14mm sump-plug washer

• Replacement washer supplied in Yamaha four-stroke service kits

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha four-stroke engine-oil drain plugs

• Routine engine-oil servicing

  

Typically suits:

  

• Engine models:

• Yamaha F9.9C four-stroke

• Yamaha FT9.9D high-thrust

• Yamaha F15A and F15C

• Yamaha F20A and F20B

• Yamaha F25A

• Selected Yamaha F30, F40, F50 and F60 engines

• Selected Yamaha F75 through F115 engines

• Selected Yamaha F150 through F225 engines using the same sump-plug gasket

  

• Engine Type: Yamaha four-stroke outboard

• Thread / Washer Application: Approximately 14mm engine-oil drain plug

• Year Range: Engine and sump-design controlled.

  

🔌 Function

  

The washer seals the oil-drain plug against the sump, preventing engine oil escaping during operation.

  

Common signs of failure:

  

• Oil seeps around the drain plug

• Washer is crushed or distorted

• Plug requires excessive tightening to seal

• Oil appears inside the lower cowling

• Washer was reused after an oil change

  

📦 Condition

  

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 4.76 AUD
- **Vendor:** Yamaha
- **Tags:** Yamaha Marine Parts | Outboard Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4.76 AUD | In stock |

## Images

- 90430-14M09 Yamaha Sump Washer | Genuine OEM Yamaha Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/90430-14m09-sump-washer)
> Updated: 2026-07-11