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

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

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🔧 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

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in the condition you received it for a refund or exchange. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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