Denso 234-4264 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4264

Denso 234-4264 is a specific-fit heated oxygen sensor built to OE-style requirements for direct replacement on select Land Rover applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on downstream positions for the LR3 and Range Rover Sport.

The OE Style line focuses on exact replacement dimensions and connector design, making this Denso oxygen sensor a practical choice for drivers servicing a Land Rover LR3 oxygen sensor or Range Rover Sport downstream sensor application.

Key Features

• Heated oxygen sensor for faster operating readiness
• Specific fit design for direct replacement
• 4-wire configuration with male connector
• Threaded mounting with 0.708 thread diameter
• Wiring harness length: 9.06
• OE-style construction for accurate sensor placement
• Built with an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination

Detailed Description

Denso 234-4264 is an emission control sensor designed for downstream exhaust monitoring on 2007-2009 Land Rover LR3 and 2007-2009 Land Rover Range Rover Sport, including the 2007 North American Specification Range Rover Sport. As a heated oxygen sensor, it helps the engine control system monitor exhaust oxygen content after the catalytic converter, supporting proper fuel control and emissions performance. This part cross-references Bosch 13476 for the same application.

The Denso OE Style product line is built around precision replacement fitment and tested to OE standards. That matters when replacing a downstream oxygen sensor on a Land Rover LR3 or Range Rover Sport, where connector style, thread size, and harness length must match the original layout. Part number 234-4264 is designed to install in the correct position without modification.

What It Helps Address

• Check engine light related to downstream oxygen sensor performance
• Incorrect exhaust oxygen readings reported to the engine control module
• Reduced fuel economy caused by faulty sensor feedback
• Emissions test failures tied to sensor response issues
• Rough running or drivability concerns linked to inaccurate air-fuel correction

Installation Notes and Tips

Verify the vehicle is a confirmed fit before ordering: 2007-2009 Land Rover LR3, downstream; 2007-2009 Land Rover Range Rover Sport, downstream; and 2007 Land Rover Range Rover Sport, downstream, North American Specification. Match the connector, thread diameter, and harness length to the original sensor before installation. Because this is a threaded, specific-fit sensor, proper removal and installation tools help prevent damage to the exhaust bung and wiring.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for exact replacement fitment and consistent performance. The sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life in demanding exhaust conditions.