Oxygen Sensor for All Cars

• Measures unburned oxygen in exhaust gases for real-time data to the Engine Control Unit (ECU). • Crucial for adjusting air-fuel ratio to optimize engine performance and fuel economy. • Prevents issues like wasted fuel (rich mixture) or engine damage from high temperatures (lean mixture). • Upstream sensors fine-tune fuel delivery based on initial exhaust readings. • Compatible with various Toyota models, including Corolla. • Used part, ensuring a cost-effective replacement. • Essential component for maintaining engine health and emissions compliance.