Pro Comp 2-5/8in Silver Liq-Fill Water 140-280

The AutoMeter Pro Comp 2-5/8 inch Silver Liquid-Filled Water Temperature Gauge (Part #4631) is a mechanical analog temperature instrument engineered for precision monitoring across the 140–280 degree Fahrenheit range. This full-sweep liquid-filled water temperature gauge delivers reliable, real-time coolant temperature data in a compact 2-5/8 inch diameter face suitable for dash, pod, or panel integration in high-performance engines, heavy-duty vehicles, and marine power plants where thermal management is critical to operational longevity.

Liquid-filled gauge construction provides superior vibration damping and needle stability compared to air-filled alternatives—a practical advantage in rough-duty applications where dash shake and engine vibration would otherwise produce needle flutter and readability loss. The full-sweep mechanical design ensures smooth, linear temperature tracking from cold start to peak operating temperature. The silver-face dial offers high contrast visibility in varied lighting conditions, while the ultra-lightweight construction minimizes addition to wiring harness and mounting systems. All mechanical components are sealed and calibrated to maintain accuracy across thousands of thermal cycles.

This gauge is specified by operators managing turbocharged engines, marine inboards, agricultural equipment, and industrial powerplants where real-time coolant temperature awareness prevents catastrophic overheating events. The compact 2-5/8 inch format fits standard aftermarket gauge pods and OEM-style bezels, making retrofit installation straightforward. Operators working offshore, in desert environments, or at sustained high engine load benefit from immediate visual confirmation of thermal status without reliance on electronic display systems that may fail under voltage stress or electromagnetic interference.

AutoMeter Pro Comp liquid-filled water temperature gauges have established a track record in both street and competition use where analog gauge reliability and independent readout (independent of vehicle electrical architecture) are valued. The 140–280 degree F range is matched to standard coolant boiling points and thermal management thresholds, making this gauge suitable for both stock and modified cooling systems.