Mercury MerCruiser Quicksilver Pressure Sensor 8M0157742
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Mercury / MerCruiser Quicksilver Pressure Sensor — 8M0157742
The Mercury Quicksilver 8M0157742 is a genuine OEM water pressure sensor kit designed to monitor the engine cooling system water pressure on select Mercury and MerCruiser engines. It provides real-time pressure data to the engine’s monitoring system, helping detect cooling problems before overheating occurs.
Key Specifications
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Part Number: 8M0157742
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Type: Water pressure sensor
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Pressure Range: 0–50 PSI
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OEM Brand: Mercury Marine / Quicksilver
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Construction: Composite body with corrosion-resistant fittings
Compatible Engines
Commonly used on:
MerCruiser Sterndrive & Inboard Engines
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305 CID (5.0L) V8
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350 CID (5.7L) V8
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377 CID V8
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496 CID (8.1L) V8
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502 CID V8
Mercury Outboards
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110–200 HP 2-stroke
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2.5L Jet
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Pro XS
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DFI
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SST models
These applications typically use the sensor as part of the engine monitoring system to track cooling water pressure.
Function
The pressure sensor measures cooling water pressure in the engine block or cooling circuit and sends the reading to the engine control system or gauge.
This helps:
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Monitor cooling system performance
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Detect restricted water flow
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Prevent engine overheating
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Trigger alarms or warnings if pressure drops too low
Superseded / Cross-Reference Numbers
This sensor may replace earlier Mercury numbers such as:
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8M6000623
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8818793
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881879010
⚠️ Fitment Tip:
Always verify compatibility using the engine model and serial number. Mercury uses several pressure sensors with different PSI ranges depending on the cooling system and engine generation.
Shipping: Ships same or next day for fast Canada wide shipping.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.