65W-82504-00-00 Yamaha F40BET Oil Pressure Switch | Genuine Used Part

🔧 Product Description

Genuine Yamaha Four-Stroke Engine Oil Pressure Switch - Part Number: 65W-82504-00-00

A genuine used Yamaha oil-pressure switch for selected F20, F25, F30, F40 and F45 four-stroke outboard motors.

The switch monitors the engine lubrication system and activates the warning circuit if oil pressure falls below the specified operating level.

⚙️ Key Features

• Genuine used Yamaha oil-pressure switch
• Correct OEM part number 65W-82504-00-00
• Threaded cylinder-block installation
• Used on selected small and mid-range four-stroke engines
• Provides low-oil-pressure warning input

🚤 Compatibility

Commonly used on

• Yamaha small and mid-range four-stroke lubrication systems
• Tiller and remote-control engine configurations

Typically suits

• Engine models:
• Yamaha F20
• Yamaha F25
• Yamaha FT25 High Thrust
• Yamaha F30
• Yamaha F40
• Yamaha F40BET
• Yamaha F45
• Model diagrams specifying switch 65W-82504-00-00
• HP Range: Approximately 20HP - 45HP
• Engine Type: Yamaha inline two-cylinder and three-cylinder four-stroke outboard
• Year Range: Approximately late 1990s through the 2000s

🔌 Function

The switch changes electrical state when oil pressure drops below its calibrated threshold, activating the warning indicator and applicable engine-protection system.

⚠️ Common Signs of Failure

• Oil-pressure warning remains active with correct pressure
• Warning does not activate when pressure is low
• Engine protection operates intermittently
• Oil leaks from the switch
• Terminal is loose or corroded
• Switch fails continuity testing
• Wiring movement changes the warning state

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 65W-82504-00-00 current original Yamaha oil-pressure-switch reference

OEM / Related Numbers

• 65W-82504-00-00
• 65W825040000
• 65W-82504-00
• Related oil-pressure warning harness and engine indicator
• Related sealing washer or approved thread sealant

Aftermarket / Verified Equivalents

• Aftermarket direct-replacement oil-pressure switch under 65W-82504-00-00

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated