Oxygen Sensor for 2007-2012 Mazda CX-7 & More - Walker 250-25066

Walker Products 250-25066 oxygen sensor for the 2007-2012 Mazda CX-7 4-cylinder 2.3L and other vehicles measures how much oxygen is in the exhaust gas. This upstream wide-band sensor is made for its specific application and position and sends the ECU the diagnostic feedback it requires.

• Monitors the air-fuel ratio for combustion efficiency
• Oxygen readings help fine-tune the air-fuel mixture, which supports fuel economy
• Coating protects the electrode surfaces from contamination and erosion by combustion residue and particulates in the exhaust
• Electrodes made of a gas-permeable platinum layer
• Helps reduce pollutants by monitoring the exhaust gases

Quick facts

• Part: Walker Products 250-25066 oxygen sensor
• Fits: 2007-2012 Mazda CX-7 4-cylinder 2.3L and other vehicles
• Position: Upstream
• Condition: New

A failing sensor can show up as an engine that runs poorly, higher fuel consumption or a lit malfunction indicator light. The wiring harness and connector can also be behind those symptoms, so look them over for physical damage before you replace the sensor.

Fits

This listing is one upstream sensor. It fits the 2007-2012 Mazda CX-7 4-cylinder 2.3L and the 2006-2007 Mazda 6 4-cylinder 2.3L, and each of them takes one.

Specifications

Product information is for general reference and may contain errors. See our Disclaimer.