Oxygen Sensor for Mazda 3 2006-2013 2.0L-2.5L, 5-Wire Semi-Heated, Direct Fit, LFL7-18-8G1
Upgrade your Mazda 3’s exhaust sensing with this Mazda 3 Oxygen Sensor from WEIDA AUTO PARTS. This 5-wire, semi-heated sensor is designed for Mazda 3 models with 2.0L–2.5L engines from 2006–2013 and carries OEM reference LFL7-18-8G1 to ensure a precise fit and reliable performance. Built around a piezoelectric sensing element, it delivers accurate oxygen readings that help the engine control unit optimize the air-fuel mix, reduce emissions, and keep fuel economy steady. The semi-heated design means the sensor reaches operating temperature faster, improving cold-start response and catalyst light-off without sacrificing durability. Originating from mainland China, this sensor is crafted to meet strict automotive standards while staying cost-effective for enthusiasts and professional installers alike.
Benefits & Tips
- Faster catalyst heating and improved cold-start performance thanks to the semi-heated design, helping reduce emissions from the moment the engine starts.
- Reliable narrowband oxygen sensing with a 5-wire configuration that ensures stable signal output and proper heater operation for consistent engine management.
- Ideal replacement for Mazda 3 owners or shops performing DIY maintenance—verify compatibility with OEM reference LFL7-18-8G1 before purchase for a confident fit.
Product specifications
- Brand: WEIDA AUTO PARTS
- OEM No. / Part number: LFL7-18-8G1
- Application: Mazda 3 2006–2013, engines 2.0L–2.5L
- Sensor Type: Piezoelectric
- Wiring: 5-wire
- Heating: Semi-heated
- Origin: Mainland China
Package includes:
- 1 x Mazda 3 Oxygen Sensor (OEM LFL7-18-8G1)
Warnings / Reminders
- Ensure the engine is cool before replacement and disconnect the battery to avoid electrical shorts.
- Match the connector orientation and OEM reference LFL7-18-8G1 to ensure proper wiring and heater function.
- Avoid touching the sensor tip and keep the sensor free from oil, gasoline, or silicone-based sealants during installation and handling.
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