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