Oxygen Sensor Lambda For Mazda 3 BK 1.6L 1.4L Engines Replacement Z601-18-861B Compatible

Upgrade your Mazda 3 BK with a genuine-sounding Lambda Oxygen Sensor designed for 1.6L and 1.4L engines. This WEIDA AUTO PARTS sensor (OEM No. Z601-18-861B) delivers precise oxygen readings to your ECU, helping optimize fuel mix, reduce emissions, and maintain smooth acceleration. Built to fit the BK generation, it ensures quick warm-up and stable performance across a broad operating range, so your engine runs efficiently in city traffic and on open highways alike.

Key benefits come from a reliable 4-wire heated design and a magnetic induction sensor type that supports fast, accurate readings even during cold starts. With durable construction and a direct fit for the Mazda 3 BK 1.6L and 1.4L configurations, this sensor helps your vehicle maintain optimal combustion and protect your catalytic converter over time. Trust in a part that aligns with the OEM specification and keeps your revs steady while preserving fuel economy and lower exhaust emissions.

By replacing a worn or faulty lambda sensor, you can prevent common issues like fluctuating idle, poor fuel economy, and elevated emissions. This sensor is a practical, cost-effective upgrade that restores ECU feedback, enabling smoother engine management and quicker adaptation after installation. It’s a straightforward replacement that restores the connection between exhaust gas readings and engine control, giving you confidence in every drive.

Benefits & Tips

• Use as a direct replacement for Mazda 3 BK 1.6L and 1.4L engines to restore precise air-fuel ratio feedback and improve overall drivability.
• After installation, perform a brief drive cycle to allow the ECU to relearn and optimize fuel trim for your driving style.
• Ensure a clean mounting surface and proper sensor torque during installation to avoid leaks and ensure reliable readings from the start.

Product specifications

• Brand: WEIDA AUTO PARTS
• Model/Part: Z601-18-861B
• Engine compatibility: Mazda 3 BK, 1.6L and 1.4L engines
• Sensor type: Magnetic Induction
• Heating: Yes (4-wire design)
• OEM No.: Z601-18-861B
• Origin: Mainland China
• Hysteresis: Z601-18-861B
• Repeatability: Z601-18-861A / Z601-18-861
• Measuring range note: Broad applicability across related engine platforms
• Application note: Designed for reliable oxygen sensing to support ECU feedback and catalytic efficiency

Package includes:

• 1 x Mazda 3 Lambda Oxygen Sensor (Z601-18-861B)

Warnings/Reminders

• Disconnect the vehicle battery before installation and ensure the engine is cool.
• Handle the sensor with care; avoid contaminating the sensing element and ensure proper electrical connections.
• Check compatibility with your vehicle’s ECU and follow the manufacturer’s installation guidelines.

Language support: Not specified for this product. If available, language options will be noted in product details.

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