2-5/8in Ultra-Lite 0-100 Fuel Press. Gauge

The AutoMeter 2-5/8 inch Ultra-Lite 0-100 psi Fuel Pressure Gauge (Model 4612) is a mechanical analog fuel pressure gauge engineered for vehicles requiring accurate, real-time fuel system monitoring. This liquid-filled gauge features a full-sweep needle movement and silver face design, delivering reliable pressure readings across the 0–100 psi range. The compact 2-5/8 inch diameter makes it suitable for tight engine bay installations where standard gauges cannot fit.

AutoMeter's liquid-filled design provides damping to reduce needle flutter and vibration interference, critical when mounted near high-vibration areas like fuel rails or distribution blocks. The mechanical operation means no electrical signal conditioning or calibration drift—what you read is what your fuel system is delivering. The full-sweep needle provides smooth, responsive pressure indication across the entire 0–100 psi scale, allowing you to detect fuel pump degradation, regulator drift, or fuel line restriction before they cause driveability issues or engine damage. At 1.15 lbs, the ultra-lite construction minimizes vibration transmission to mounting brackets while maintaining the ruggedness needed for continuous operation.

This gauge is suited for carbureted engines, naturally aspirated fuel-injected systems, and moderate-boost applications where fuel pressures remain below 100 psi. Street-driven vehicles, vintage restorations, and performance builds benefit from direct fuel pressure visibility, enabling tuners and technicians to validate fuel delivery independently of engine electronics. The standardized 2-5/8 inch mounting diameter integrates into existing gauge pods, pillar mounts, or custom dashboard installations without custom fabrication.

Mechanical fuel pressure gauges remain industry standard in performance and diagnostic work because they are immune to electrical noise, require no power supply, and provide unambiguous analog feedback. This AutoMeter model represents a proven approach to fuel system monitoring that complements OEM sensors or serves as a standalone troubleshooting tool.