8043071 Mercury Oil Pressure Switch | Genuine Used Part
8043071 Mercury Oil Pressure Switch | Genuine Used Part
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🔧 Product Description
Genuine Mercury Mariner 75HP-115HP Four-Stroke Oil-Pressure Switch - Part Number: 8043071
A genuine used Mercury / Mariner oil-pressure switch for Yamaha-derived 75HP to 115HP four-stroke outboard motors.
The switch monitors lubrication pressure and sends a warning or engine-management signal when pressure falls below its calibrated threshold. It directly cross-references Yamaha oil-pressure switch 68V-82504-00-00.
⚙️ Key Features
- Genuine used Mercury Marine oil-pressure switch
- Correct OEM part number 8043071
- Yamaha equivalent 68V-82504-00-00
- Used on carburetted and EFI four-stroke engines
- Threaded pressure-switch design
🚤 Compatibility
Compatible Mercury / Mariner serial groups include
- 75HP carburetted four-stroke: 0G960500-0T800999 and 0T801000-1B226999
- 75HP Bodensee carburetted: 0G960500-0T800999 and 0T801000-1B226999
- 75HP EFI: 1B172291-1B366822
- 80HP EFI: 1B227000-1B366822
- 90HP carburetted four-stroke: 0G960500-0T800999 and 0T801000-1B226999
- 90HP EFI: 1B172291-1B366822
- 100HP EFI: 1B227000-1B366822
- 115HP EFI: 0T178500-0T800999, 0T801000-1B226999 and selected 1B227000-1B366822
- Yamaha F75, F80, F90, F100 and F115 engines using 68V-82504-00-00
- Engine Type: Yamaha-derived inline four-cylinder four-stroke outboard
- Production Range: Approximately 1999-2006 for Mercury-branded applications
🔌 Function
The switch detects engine-oil pressure and triggers the warning or protection system when pressure is below the calibrated safe level.
⚠️ Common Signs of Failure
- Low-oil-pressure warning remains active
- Warning does not operate during an actual pressure loss
- Switch leaks oil through the body or threads
- Electrical terminal is corroded
- Warning is intermittent
- Switch calibration has drifted
- Engine-management fault is stored
🔄 Supersession & Cross Reference
OEM Supersession Chain
- 8043071 current Mercury reference for the Yamaha-derived engine family
- Yamaha 68V-82504-00-00 is the verified other-brand equivalent
OEM / Related Numbers
- 8043071
- Yamaha 68V-82504-00-00
- Related sealing washer or thread sealant as specified
- Related engine harness and warning-system components
- Related oil pump 858579T3
- Related dipstick 8596021
Aftermarket / Verified Equivalents
- Yamaha: 68V-82504-00-00 - direct OEM equivalent
- No verified aftermarket equivalent
📦 Condition
- Genuine used part
- Removed from running engine where applicable
- In good working condition unless otherwise stated
Shipping & Delivery
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
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?
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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