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Stewart Warner 2-5/8" Air Fuel Ratio Wht.
Stewart Warner Air/Fuel Ratio Gauge The air/fuel ratio gauge is essentially a voltmeter that displays the voltage output of an oxygen sensor in order to determine the richness or leanness of the exhaust mixture. This gauge features four red LEDs (for lean status), 10 yellow LEDs (stoichiometric), and six green LEDs (rich). They have lighted dials with high-resolution readout and exceptional day or night visibility. They work with most OEM and aftermarket oxygen sensors.
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