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Air/Fuel Ratio Gauges

Correct air / fuel mixture is critical to achieving maximum power, efficiency, and engine life. The color of your exhaust pipe can only tell you so much! Air / Fuel Ratio Gauges tell you exactly what is happening in your engine, as it happens.

K&N Fuel/Air Ratio Monitors
K&N Fuel/Air Ratio Monitors
Wideband Air/Fuel Ratio Monitors
Wideband Air/Fuel Ratio Monitors
Oxygen Sensors
Oxygen Sensors
Oxygen Sensor Weld Bungs and Fittings
Oxygen Sensor Weld Bungs and Fittings

Recent Top Selling Products for this category

MTX-L Wideband Air/Fuel Ratio Gauge
MTX-L Wideband Air/Fuel Ratio Gauge

The MTX-L Wideband Air/Fuel Ratio Gauge has the digital wideband controller built into it. Large digital LED readout with 270-degree sweep "digital needle" makes it fast responding and accurate.

Wideband O2 Sensor Only (Bosch LSU 4.9), for AiM LCU-One
Wideband O2 Sensor Only (Bosch LSU 4.9), for AiM LCU-One

This genuine Bosch wideband O2 (Lambda) sensor is the direct replacement for the sensor supplied with the AiM LCU-One Lambda Controller.

Stainless Steel Sensor Plug & Weld Bung for O2 Sensor
Stainless Steel Sensor Plug & Weld Bung for O2 Sensor

This stainless steel sensor plug and weld bung is welded into the exhaust pipe before the catalytic converter to hold an O2 sensor which measures the air/fuel ratio before the catalytic converter.