Description

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.

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Key Specifications

• Part Number: 8M0157742

• Type: Water pressure sensor

• Pressure Range:0–50 PSI

• OEM Brand: Mercury Marine / Quicksilver

• Construction: Composite body with corrosion-resistant fittings

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Compatible Engines

Commonly used on:

MerCruiser Sterndrive & Inboard Engines

• 305 CID (5.0L) V8

• 350 CID (5.7L) V8

• 377 CID V8

• 496 CID (8.1L) V8

• 502 CID V8

Mercury Outboards

• 110–200 HP 2-stroke

• 2.5L Jet

• Pro XS

• DFI

• SST models

These applications typically use the sensor as part of the engine monitoring system to track cooling water pressure.

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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:

• Monitor cooling system performance

• Detect restricted water flow

• Prevent engine overheating

• Trigger alarms or warnings if pressure drops too low

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Superseded / Cross-Reference Numbers

This sensor may replace earlier Mercury numbers such as:

• 8M6000623

• 8818793

• 881879010

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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.