46797A1 Mercury Temp Gauge | Genuine Used Part

🔧 Product Description

Genuine Mercury MerCruiser Water Temperature Gauge - Part Number: 46797A1

A genuine used Mercury / MerCruiser engine-temperature gauge for selected early petrol sterndrive and inboard instrument panels.

The gauge receives a variable-resistance signal from the engine-mounted temperature sender and displays the cooling-system temperature. The replacement gauge and sender must use the same resistance calibration.

⚙️ Key Features

• Genuine used Mercury / MerCruiser temperature gauge
• Original OEM part number 46797A1
• Early Quicksilver / MerCruiser instrument design
• Electrical sender-operated gauge
• Suitable for selected pre-1985 dashboards

🚤 Compatibility

Commonly used on

• Early Mercury and MerCruiser sterndrive dashboards
• Kiekhaefer and Quicksilver petrol-engine instrument panels
• GM-based marine petrol engines using the matching sender

Typically suits

• Early MerCruiser inline-four, inline-six, V6 and V8 petrol packages
• Pre-1985 instrument systems where 46797A1 or a listed related reference is specified
• 12-volt marine electrical systems
• Fitment controlled by sender calibration and instrument-panel design

🔌 Function

The gauge converts the temperature sender's resistance into a needle position showing approximate engine temperature.

⚠️ Common Signs of Failure

• Gauge remains cold
• Needle immediately moves to maximum
• Reading is inaccurate
• Gauge reacts when the wiring moves
• Sender and gauge do not match
• Illumination does not operate
• Terminals are corroded

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 59054A1 later related Mercury temperature-gauge assembly
• 46797A1 earlier temperature-gauge reference
• 55344 and 34629 earlier related Mercury gauge references

OEM / Related Numbers

• 46797A1
• 46797
• 59054A1
• 55344
• 34629
• Related Mercury temperature sender according to engine and gauge calibration
• Related instrument-panel illumination bulb and mounting hardware

Aftermarket / Verified Equivalents

• Sierra / Teleflex: 59654 or 59654F - 120-240°F water-temperature gauge
• Sierra: 65509P - Lido water-temperature gauge
• Faria two-inch marine temperature gauge with a compatible sender
• Replacement must match the original sender resistance and dash opening

📦 Condition

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