534-201 - Holley WideBand A/F Gauge

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Part #: 534-201
Notes: WideBand 02 Controller
w/ Gauge
Your Price: $467.95

This Item Also Available In

Part Number Price Notes & Specs
534-199 $89.92 Notes Oxygen Sensor Extension Cable
554-100 $323.33 Notes NTK Wideband Oxygen Sensor
554-101 $193.97 Notes LSU4 Bosch Wideband Oxygen Sensor
534-215 $271.85 Notes WideBand A/F Gauge
Bezel Color Black
Dial (Face Color) Black
Pointer Color Red
Size (in.) 2.0625 / 2 1/16
534-215W $271.85 Notes WideBand A/F Gauge
Bezel Color Black
Dial (Face Color) White
Pointer Color Red
Size (in.) 2.0625 / 2 1/16

All Fitments

Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes

Product Description

Holley is pleased to announce newest member of its very successful analog-style gauges with the release of a NEW fully standalone 2-1/16” Air/Fuel Wideband O2 Gauge Kit. This highly accurate and feature packed unit is designed specifically for use with all EFI or carbureted systems and available in both black and white face versions.


  • Completely standalone with easy-to-read analog dial – Great for EFI or carbureted applications
  • Includes Bosch LSU 4.9 wideband O2 sensor which is compatible with all fuel types (Unleaded, Leaded, E85, Diesel, or Methanol)
  • Slim-style mounting requires very little dash space for installation
  • 270° sweep pointer from 6 to 3 o’clock makes gauge easy to read at a glance
  • Internal microprocessor controls the pointer movement to ensure accurate movement in street, off road, and racing conditions
  • Adjustable LED warning light allows user to set both low and high trigger points
  • Peak recall button allows user to view min/max gauge readings
  • Gauge includes a 5 ft. 6-pin weathertight sensor harness and 4 ft. power/ground/lighting harness allowing for flexible mounting locations
  • Spin lock ring threads to back of gauge case for simple and secure gauge mounting
  • CNC machined billet aluminum bezels with anodized finish – Bezels are threaded for easy replacement
  • Multiple bezel options available separately – User can customize the gauge to their preference