Zeitronix - Your Ultimate Tuning Partner

NEW ZR-3 AFR Gauge

Low cost, high performance!
ONLY $89

  • Red,  Blue and White digital AFR readout with large 0.4" (10mm) digits

  • Slim 0.75" (19mm) design for flexible 52mm pod or surface mounting options

  • High contrast display visible even in direct sunlight


The ZR-3 AFR Gauge works with all Zt-2 and Zt-3 Wideband Systems. The ZR-3 Gauge plugs into the Zt-3/Zt-2 DATA port. Power and serial data is supplied directly through the single connection - there are no additional +12V or ground  wires. The ZR-3 cable length is 5 ft (1.5m).


The ZR-3 AFR gauge is only 6/8" (19mm) thick. The back of the gauge is completely flat with cable hidden in a cavity and can be surface mounted almost anywhere inside the car cabin using a piece of Velcro or double sided tape. The ZR-2 base allows the gauge to be mounted in a standard 2 1/16 (52mm) gauge pod. For additional mounting options the package includes 2 set screws and 2 nuts (4-40 screw size). See the Zeitronix gallery for various gauge installation pictures.

ZR-3 Gauge Dimensions:

Base diameter     2" 1/16 (52mm)
Bezel diameter    2" 1/2   (62mm)
Thickness           0.75"      (19mm)
Digit height         0.3"       (7.5mm)

Side View

Back View
ZR-2 Back View
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Download ZR-3 AFR Gauge Instructions (coming soon)