Denso 234-4465 Oxygen Sensor - Downstream or Downstream Right

Denso OE Style Oxygen Sensor 234-4465

Denso 234-4465 is an OE Style heated oxygen sensor built for direct replacement on select Land Rover applications. It is engineered for specific fitment, accurate signal response, and a first-time fit on downstream locations for the Land Rover LR4, Range Rover Sport, and Range Rover.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit design for direct replacement
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 40.59 in. wiring harness length
• OE Style construction for Land Rover downstream applications

OE Style Design and Application

The Denso OE Style line is built to match original equipment standards for fit and function. This sensor uses precision-built components for exact replacement and consistent installation on the intended downstream right or downstream positions. Denso also incorporates an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management performance and long service life. This part number, 234-4465, is a direct replacement choice for drivers servicing Land Rover LR4, Range Rover Sport, or Range Rover exhaust and emissions systems.

This part cross-references Bosch 18019 and NTK 25713 for the same application.

Vehicle Fitment

• Fits 2010-2013 Land Rover LR4, downstream right.
• Fits 2010-2013 Land Rover Range Rover Sport, downstream right.
• Fits 2010-2012 Land Rover Range Rover, downstream.

Common Issues This Sensor May Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn downstream sensor
• Reduced fuel economy caused by inaccurate exhaust feedback
• Slow sensor response after contamination or age-related wear
• Emissions test failures tied to faulty oxygen sensor output

Installation Notes and Tips

Confirm the connector style, wire count, thread diameter, and mounting location before installation. This is a specific-fit, threaded sensor for downstream applications, so matching the vehicle position is important for proper operation. Verify the harness routing and connector reach against the original sensor before final tightening.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and consistent performance. The OE Style design is intended to deliver the correct fit and function for the listed Land Rover applications.