Oxygen Sensor For Mazda 6 2006-2007 Heated 4 Wire Lambda Air Fuel Ratio Sensor Premium Replacement

Upgrade your Mazda 6 with this 2006-2007 Oxygen Sensor from WEIDA AUTO PARTS. This heated, 4-wire lambda sensor is designed to precisely monitor exhaust oxygen content and help your engine maintain the ideal air-fuel ratio for smoother running, better fuel economy, and reduced emissions. It’s a direct replacement that matches the OEM reference L3M7-18-861B, ensuring reliable signal to the ECU for consistent performance on 2006-2007 Mazda 6 models.

Benefits & Tips

• Restore optimal fuel efficiency and smooth acceleration by replacing a worn or failed oxygen sensor.
• Quick heater-assisted warm-up minimizes cold-start emissions and improves ECU response during early driving.
• Keep engine diagnostics clean—use after installation to help the ECU recalibrate and maintain proper air-fuel balance over time.

Product specifications

• Brand: WEIDA AUTO PARTS
• Name: Mazda 6 Oxygen Sensor / Air-Fuel Ratio Lambda Sensor
• Model/Compatible: 2006-2007 Mazda 6
• OEM No.: L3M7-18-861B
• Hysteresis (codes): L3M7-18-861B, L3M7-18-861C, L3M7-18-861C9U
• Measuring Range: suitable for 2006-2007 MAZDA 6
• Sensor Type: Magnetic Induction
• Wire: 4-wire (heated)
• Origin: Mainland China
• Repeatability: L3M718861B, L3M718861C, L3M718861C9U
• Notes: Type heating

Package includes:

• 1x Oxygen Sensor (L3M7-18-861B/L3M7-18-861C9U compatible, as listed)

Warnings / Reminders

• Professional installation is recommended to ensure proper fit and seal.
• Disconnect the vehicle battery and allow the exhaust system to cool before handling the sensor.
• Follow vehicle service procedures and torque specifications when installing.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

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