Denso 234-4461 Oxygen Sensor

Denso OE Style Oxygen Sensor 234-4461

Denso 234-4461 is an OE Style heated oxygen sensor built for direct replacement on select Honda and Acura applications. It is engineered for specific fitment, threaded mounting, and a 4-wire male connector to match the original sensor layout on covered vehicles.

For drivers servicing a Honda Accord, Honda Odyssey, Acura MDX, or Acura TL, this oxygen sensor supports accurate exhaust feedback and straightforward replacement with the correct OE-style configuration. The Denso OE Style line focuses on exact replacement dimensions and factory-style fitment.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit design for direct replacement applications
• 4-wire configuration with male connector
• Threaded mounting type for OE-style installation
• 24.96 in. wiring harness length
• 0.708 in. thread diameter
• Built to Denso OE standards for replacement accuracy

OE Style Design

The Denso OE Style product line is built around factory-matched replacement parts. This approach helps ensure the sensor matches the original application’s connector style, mounting method, and harness length, which is important when replacing a downstream oxygen sensor on vehicles such as the Honda Pilot, Acura RDX, or Acura TSX. Part number 234-4461 is intended for direct-fit service where original equipment dimensions matter.

This part cross-references Bosch (e.g., 18031, 18048) for the same application.

Fitment

• Fits 2017-2020 Acura MDX, Downstream Right
• Fits 2019-2020 Acura RLX, Downstream Right
• Fits 2013-2015 Acura RDX, Downstream Rear
• Fits 2012-2015 Honda Pilot, Downstream Rear
• Fits 2010-2014 Acura TL, Downstream Rear
• Fits 2010-2014 Acura TL, Downstream Front
• Fits 2009-2014 Acura TL, Downstream
• Fits 2010-2014 Acura TSX, Downstream
• Fits 2012-2014 Honda Ridgeline, Downstream Rear
• Fits 2010-2013 Acura MDX, Downstream
• Fits 2013 Acura ZDX, Downstream Rear
• Fits 2008-2013 Honda Odyssey, Downstream
• Fits 2009-2012 Acura RL, Downstream Front
• Fits 2010-2012 Acura ZDX, Downstream
• Fits 2008-2012 Honda Accord, Downstream
• Fits 2012 Honda Crosstour, Downstream Rear
• Fits 2010-2011 Honda Accord Crosstour, Downstream Rear
• Fits 2009-2011 Honda Pilot, Downstream
• Fits 2009-2011 Honda Ridgeline, Downstream

Common Issues This Sensor Addresses

• Fault codes related to oxygen sensor performance
• Delayed or inaccurate exhaust gas feedback
• Rough fuel control caused by a worn downstream sensor
• Check engine light concerns tied to sensor aging
• Replacement needs after connector or heater circuit wear

Installation Notes and Tips

Confirm the connector style, wire count, and mounting location before installation. This sensor uses a threaded mount and a specific-fit design, so matching the vehicle position is important on applications such as the Acura MDX downstream right or Honda Accord downstream.

Inspect the harness routing and connector condition during replacement. Verify the part number 234-4461 against the original sensor and vehicle service information before installation.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent fit. The sensor also uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life and stable engine performance.