# 67F-43861-00 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

🔧 Product Description

  

Genuine Yamaha Trim Cylinder End-Cap O-Ring - Part Number: 67F-43861-00

  

A genuine Yamaha hydraulic O-ring fitted to the trim-cylinder end-cap assembly on selected Yamaha four-stroke outboards.

  

The O-ring seals the trim-cylinder end screw or end cap against the hydraulic cylinder bore. It maintains trim-fluid pressure while preventing water and contaminants from entering the cylinder assembly.

  

⚙️ Key Features

  

• Genuine Yamaha OEM power trim O-ring

• Correct Yamaha part number 67F-43861-00

• Fits the hydraulic trim-cylinder end-cap location

• Supports pressure retention during trim and tilt operation

• Common service item during Yamaha trim-cylinder rebuilding

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 67F-43861-00 current Yamaha OEM service reference

  

OEM / Related Numbers:

  

• 67F-43861-00

• 67F-43861-00-00

• 67F438610000

• 67F-43821-00 earlier related trim-cylinder end screw

• 67F-43821-09 later related trim-cylinder end screw

• 6H1-43812-00 related dust seal

• 6H1-43872-10 related backup ring

• 93210-18397 related hydraulic O-ring

• 62X-43862-00 related trim-cylinder O-ring

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Yamaha four-stroke power trim and tilt assemblies

• Yamaha 67F-series trim-cylinder end-cap systems

  

Typically suits:

  

• Engine models:

• Yamaha F75 four-stroke

• Yamaha F80 and F80A four-stroke

• Yamaha F90 four-stroke

• Yamaha F100 and F100A four-stroke

• Yamaha F100AET 2001 power trim and tilt assembly

• Yamaha F80BET 2005 power trim and tilt assembly

• Yamaha F90LA 2017 power trim and tilt assembly

  

• HP Range: 75HP - 100HP

• Engine Type: Yamaha four-stroke outboard with hydraulic power trim and tilt

• Year Range: Approximately 1999 - 2017, dependent on trim-unit design

  

🔌 Function

  

The O-ring seals the trim-cylinder end cap to the hydraulic cylinder body. This allows the trim system to retain fluid pressure and hold the engine at the selected angle.

  

Common signs of failure:

  

• Hydraulic fluid leaking around the trim-cylinder end cap

• Engine slowly drops after being trimmed

• Trim movement becomes weak or inconsistent

• O-ring becomes flattened, cut or swollen

• Water or corrosion is found inside the hydraulic cylinder

  

📦 Condition

  

• Genuine Yamaha part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 17.89 AUD
- **Vendor:** Yamaha
- **Tags:** Yamaha Marine Parts | Outboard Engine Parts & Components

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 17.89 AUD | In stock |

## Images

- 67F-43861-00 Yamaha O-Ring | Genuine OEM Yamaha Outboard Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/67f-43861-00-o-ring)
> Updated: 2026-07-11