Zeitronix - Your Ultimate Tuning Partner

SEMA Award Winning Zeitronix Dual AFR ZR-4 Gauge

  • Left and Right exhaust bank shown on a single gauge side by side.
  • Stylish, machined, brushed aluminum bezel and slim enclosure
  • High contrast LED display
  • Large 0.2" (5mm) digits - available in Red or Yellow
  • Slim design for flexible gauge mounting options
  • Left and Right Bank AFR read out from the Zt-4 Dual AFR Wideband controller or Zt-2+Zt-3 combo

    The ZR-4 Gauge works with Zeitronix Zt-4 Wideband AFR meter It also can be used with Zt-2 and Zt-3 combo for dual channel AFR read out.
    The ZR-4 Gauge plugs into the Zt-4 or Zt-2 DATA port and can be used while data logging.

    Clean and easy plug and play installation: power and display information is provided using one wire connecting to the Zt-4 GAUGE / DATA port. The ZR-4 cable length is 5 ft (1.5m) and can be extended if needed.



The ZR-4 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-4 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).  Check out the gallery for gauge installation pictures.

ZR-4 gauge dimensions:
Base diameter     2" 1/16 (52mm)
Bezel diameter    2" 1/2   (62mm)
Thickness            0.75"      (19mm)
Digit height         0.4"        (10mm)

Side View
ZR-1 Side View
Back View
ZR-1 Back View
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