Denso 234-5053 Air / Fuel Ratio Sensor - Upstream, Upstream Front or Upstream Rear

Denso OE Style Air/Fuel Ratio Sensor

Denso 234-5053 is an OE Style heated air/fuel ratio sensor built for direct replacement in specific Honda and Acura applications. It is precision-built and tested to OE standards for accurate fitment, with a 5-wire design and male connector for a clean factory-style connection.

This sensor is a direct-fit choice for drivers searching for a Honda Odyssey upstream air/fuel ratio sensor or an Acura MDX upstream sensor replacement. The Denso OE Style line focuses on exact replacement parts that match the original application and connection style.

• Heated air/fuel ratio sensor for precise exhaust feedback
• Specific fit design for factory-style replacement
• 5-wire configuration with male connector
• 11.61 in. wiring harness length
• Thread diameter: 0.711
• OE Style construction for direct replacement use

Detailed Product Overview

Denso 234-5053 is engineered for emission control systems that rely on accurate air/fuel monitoring. As an OE Style part, it is built to match the original sensor form and connection requirements, helping maintain proper signal response in the engine management system. This part cross-references Bosch 13954 and NTK 24346 for the same application.

Compatible With 2008-2010 Honda Odyssey, Upstream; 2007-2010 Honda Odyssey, Upstream Rear; 2007-2010 Honda Odyssey, Upstream Front; and 2007-2009 Acura MDX, Upstream. If you need a Denso 234-5053 replacement for a Honda Odyssey upstream sensor or Acura MDX upstream sensor, this OE Style unit is built for those specific positions.

Common Problems This Sensor Can Address

• Check engine light related to air/fuel ratio sensor performance
• Incorrect fuel trim readings from a worn upstream sensor
• Rough idle or drivability issues tied to exhaust feedback errors
• Emission control faults caused by degraded sensor response
• Factory connector or fitment mismatch during replacement

Installation Notes and Tips

Verify the sensor position before ordering, since this part is listed for upstream, upstream front, and upstream rear locations depending on application. Confirm connector style, wire count, and thread diameter against the original unit before installation. For best results, inspect the harness routing and exhaust-side threads during replacement to ensure a proper factory-style fit.

Quality Assurance

Denso manufactures and tests this sensor to OE standards for consistent replacement quality and first-time fit. The OE Style product line is intended to deliver the correct part and fit for the specified Honda Odyssey and Acura MDX applications.