Denso 234-5726 Air / Fuel Ratio Sensor - Upstream

OE-Style Air/Fuel Ratio Sensor

This Denso air/fuel ratio sensor is a specific-fit, wide-band replacement built to OE standards for accurate signal control and first-time fitment. It is engineered for upstream applications on select Acura and Honda models, including the Acura RDX, Acura TLX, and Honda Accord.

Key Features

• OE-style replacement sensor for direct-fit service
• Wide-band sensor design for precise air/fuel monitoring
• 5-wire configuration with a 16.14 harness length
• Standard replacement grade for emission control service
• Specific-fit application for upstream sensor locations

Detailed Description

Denso 234-5726 is an OE-style air/fuel ratio sensor manufactured and tested to strict original-equipment standards. The wide-band design and specific-fit construction support accurate replacement on upstream emission control applications, helping restore proper sensor response in vehicles that rely on precise mixture feedback. This part number, 234-5726, is used for select Acura RDX and Acura TLX applications as well as the Honda Accord.

As part of Denso’s Air / Fuel Ratio Sensor - OE Style line, this sensor focuses on exact replacement fit and consistent electrical connection. The 5-wire layout and standard replacement grade make it a practical choice when servicing emissions-related drivability concerns on the Acura RDX, Acura TLX, and Honda Accord. Part number 234-5726 cross-references Febi-Bilstein 27071 and Gates 27072 for the same application.

What It Is Used For

• Restoring accurate air/fuel ratio feedback
• Addressing sensor-related check engine light conditions
• Replacing a worn or slow-responding upstream sensor
• Supporting proper emission control system operation
• Correcting drivability issues tied to mixture monitoring

Installation Notes and Tips

Compatible with upstream sensor positions only for the listed applications. Verify connector style, harness length, and engine-specific fitment before installation. Use the vehicle’s service information for removal and torque procedures, and confirm the part number 234-5726 matches the required application before replacing the sensor.

Quality Assurance

Denso manufactures and tests these sensors to strict OE standards for exact replacement fit and consistent performance. The OE-style design is intended to deliver the right part and the right fit on the first installation.