Premium Air‑Fuel Ratio Sensor for Toyota 🚗

Why this part is needed

This A/F sensor keeps your engine breathing right by measuring oxygen in exhaust before the catalytic converter. It helps the ECU hit the ideal mix for power, smooth idle, low emissions, and strong fuel economy. A healthy sensor protects the catalyst and avoids costly repairs. ⚙️

How it works

Unlike a basic O2 sensor, this wideband design uses a pump cell and fast heater to reach temperature quickly. It detects rich or lean conditions and sends a precise signal so the ECU can trim fuel in real time. Result: crisp throttle, clean tailpipe, and reliable cold starts. 🔧

What happens if it’s broken

Failure causes rough idle, sluggish acceleration, high fuel use, sulfur smell, and a glowing Check Engine light. Mixture swings can overheat or poison the catalytic converter, trigger emissions test failure, and foul spark plugs. Replace at first signs to prevent bigger damage. ⛽🌿⚠️

Compatibility

• Blade
• Estima
• Estima T/L
• Mark X Zio
• Previa/Tarago
• Rav4
• Rav4/Vanguard