Toyota Corolla O2 Sensor Set

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Maintain peak engine efficiency with this upstream and downstream oxygen (O2) sensor set, designed for the Toyota Corolla 1.8L (2014–2019). These sensors monitor exhaust gases to ensure the proper air-fuel mixture for optimal engine performance.

Replacing part numbers 234-9140 and 234-4921, they deliver accurate data to the engine control unit (ECU), improving fuel economy, reducing emissions, and helping prevent check engine light issues.

Built with durable materials and precision engineering, these sensors are designed for long-lasting performance. The direct-fit design with factory-style connectors ensures quick and easy installation.

Ideal for replacing worn or faulty sensors, this O2 sensor set helps restore smooth operation, efficiency, and reliability to your Corolla.