37820-99E02 Suzuki 5030826 Johnson Oil Pressure Switch | Genuine Used Part

🔧 Product Description

Genuine Suzuki Johnson Engine Oil Pressure Switch - Part Number: 37820-99E02

A genuine used Suzuki oil-pressure warning switch also fitted to selected Suzuki-built Johnson four-stroke outboard motors under Johnson part number 5030826.

The switch monitors engine lubrication pressure and sends a warning signal when pressure falls below its calibrated operating threshold.

⚙️ Key Features

• Genuine used Suzuki / Johnson oil-pressure switch
• Current Suzuki part number 37820-99E02
• Johnson cross-reference 5030826
• Supersedes earlier 99E-series switch revisions
• Threaded cylinder-block installation

🚤 Compatibility

Commonly used on

• Suzuki EFI four-stroke engine lubrication systems
• Suzuki-built Johnson four-stroke outboards

Typically suits

• Engine models:
• Suzuki DF40
• Suzuki DF50
• Suzuki DF60
• Suzuki DF70
• Suzuki DF90
• Suzuki DF100
• Suzuki DF115
• Suzuki DF140
• Selected Suzuki DF150 through DF300 engines where the parts diagram specifies 37820-99E02
• Johnson 90HP four-stroke
• Johnson 115HP four-stroke
• Johnson 140HP four-stroke
• HP Range: Approximately 40HP - 300HP
• Engine Type: Suzuki EFI four-stroke outboard
• Year Range: Model and serial-number dependent

🔌 Function

The switch changes electrical state when engine-oil pressure falls below the specified level, allowing the engine-management system to activate an alarm and protection strategy.

⚠️ Common Signs of Failure

• Oil warning remains active with correct pressure
• Warning does not activate during a genuine low-pressure condition
• Engine enters protection mode intermittently
• Oil leaks through the switch body
• Electrical terminal is damaged
• Switch fails continuity or pressure testing
• Warning changes as the wiring connector is moved

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 37820-99E02 → Supersedes 37820-99E01
• 37820-99E01 → Supersedes 37820-99E00
• 37820-99E00 earlier oil-pressure-switch reference

OEM / Related Numbers

• 37820-99E02
• 3782099E02
• 37820-99E01
• 37820-99E00
• 5030826
• 05030826
• Related engine wiring connector and oil-warning circuit

Aftermarket / Verified Equivalents

• Aftermarket direct-replacement switches sold under 37820-99E02
• Aftermarket direct-replacement switches sold under 5030826

📦 Condition

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