DENSO Direct Fit Heated Wideband Air/Fuel Ratio Sensor

The DENSO Direct Fit Heated Wideband Air/Fuel Ratio Sensor (also called an A/F sensor or wideband O2 sensor) measures the air-to-fuel ratio in the exhaust stream. It sends precise feedback to the engine control module (ECM) so the ECM can fine-tune fuel delivery for efficient combustion, lower emissions and good drivability.

Key Features:

• Wideband sensing: Reads a broad range of air/fuel ratios. This gives the ECM more accurate, continuous data than a conventional narrow-band oxygen sensor.
• Integrated heater: The heating element brings the sensor up to operating temperature quickly. This enables early closed-loop fuel control after a cold start.
• Direct fit design: Built to match the original sensor's connector and thread style, so it installs without cutting or splicing wires.
• OE-quality engineering: DENSO is an original equipment supplier to many of the world's leading automakers. It applies the same technology and quality standards to its aftermarket sensors.
• Durable construction: Made to withstand high exhaust temperatures, vibration and long-term exposure to exhaust gases.

A worn or failing air/fuel ratio sensor can cause a check engine light, poor fuel economy, rough idle, hesitation and higher emissions. Replacing it with a DENSO direct fit sensor helps restore proper fuel control and engine performance. Select the correct part number for your application from the options listed on this page.