35490-ZW5-003 Oil Pressure Switch | Genuine Used Part

🔧 Product Description

Genuine Honda Marine Engine Oil Pressure Switch - Part Number: 35490-ZW5-003

A genuine used Honda oil-pressure switch for selected four-stroke outboard motors.

The switch monitors engine lubrication pressure and provides an on-or-off warning signal to the engine control and alarm system. If oil pressure falls below the calibrated threshold, the warning system may activate the indicator, audible alarm or engine-protection function.

⚙️ Key Features

• Genuine used Honda Marine oil-pressure switch
• Correct OEM part number 35490-ZW5-003
• Threaded engine-block installation
• Single-function low-oil-pressure warning switch
• Original Honda electrical connector and pressure calibration

🚤 Compatibility

Commonly used on

• Honda four-stroke lubrication warning systems
• Cylinder-block oil-pressure galleries

Typically suits

• Engine models:
• Honda BF40D
• Honda BF50D
• Honda BF115A
• Honda BF115A1
• Honda BF115AK0
• Honda BF130A
• Honda BF130A2
• Engine and frame-serial groups whose cylinder-block diagram specifies 35490-ZW5-003
• HP Range: Approximately 40HP - 130HP
• Engine Type: Honda EFI four-stroke outboard
• Year Range: Model and frame-serial dependent

🔌 Function

The switch remains in one electrical state while sufficient lubrication pressure is present and changes state when pressure falls below its calibrated operating point.

⚠️ Common Signs of Failure

• Oil-pressure warning remains active with correct pressure
• Warning does not activate when oil pressure is low
• Engine enters protection mode intermittently
• Oil leaks through the switch body or threads
• Electrical terminal is loose or corroded
• Switch fails continuity testing
• Warning changes when the wiring harness is moved

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 35490-ZW5-003 current listed Honda Marine switch reference

OEM / Related Numbers

• 35490-ZW5-003
• 35490ZW5003
• 35490-ZW5
• Related sealing washer or thread sealant as specified by engine model
• Related oil-pressure warning lamp and engine wiring harness

Aftermarket / Verified Equivalents

• Aftermarket direct-replacement oil-pressure switches sold under 35490-ZW5-003

📦 Condition

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