Brand: Holley Manufacturer’s Part Number: 534-50 Gauge Type: Air/Fuel ratio – Narrowband OEM Replacement: No Gauge Style: Digital Sending Unit: Electrical Gauge Range: Lean-rich Gauge Shape: Unique Sweep: Bar graph Gauge Face Color: Black Gauge Number Color: Multicolor Bezel Color: Black Illuminated: Yes Memory Recall: No Playback: No Liquid-Filled: No Shift Light Included: No Tripometer: No Sending Unit Included: No Remanufactured: No Quantity: Sold individually.

Holley Rich/Lean Indicator Gauges

Holley rich/lean indicator gauges mount on your dash and allow you to monitor the air/fuel ratio of your engine while you drive. The yellow, red, and green lights direct you in achieving just the right blend. These indicator gauges are available for fuel injected vehicles with oxygen sensors and carbureted without oxygen sensors.