Denso 234-4582 Oxygen Sensor - Downstream

Denso OE Style Oxygen Sensor 234-4582

Denso 234-4582 is a specific-fit heated oxygen sensor built for downstream exhaust monitoring on select Land Rover applications. It is engineered to match OE-style dimensions and connector layout for a direct replacement on 2013-2015 Land Rover LR2 and 2012-2013 Land Rover Range Rover Evoque.

Key Features

• Heated oxygen sensor for downstream exhaust placement
• Specific-fit design for direct replacement
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 18.43 in. wiring harness length
• OE Style product line for factory-style fit and function

OE Style Design and Construction

Denso’s OE Style line focuses on exact replacement fitment and consistent sensor performance. This oxygen sensor uses precision-built components to match the original application, helping maintain accurate exhaust feedback for the engine management system. Denso also incorporates an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long service life in demanding exhaust conditions. This part number, 234-4582, is a direct-fit option for drivers servicing Land Rover LR2 and Range Rover Evoque downstream sensor locations.

This part cross-references Bosch 16256 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to downstream oxygen sensor faults
• Incorrect exhaust oxygen readings reported to the ECU
• Reduced fuel economy caused by a failing sensor signal
• Emissions test failures tied to sensor performance
• Rough or inconsistent engine operation from inaccurate air-fuel feedback

Installation Notes and Tips

Verify downstream placement before installation and confirm connector style, thread diameter, and harness length match the original sensor. Use the vehicle’s OE routing path to keep the harness away from heat and moving components. For best results, inspect the exhaust bung threads and connector terminals before installing Denso 234-4582 on a Land Rover LR2 or Range Rover Evoque.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for fit, function, and durability. The OE Style design supports first-time fitment on the listed Land Rover applications, including 2013-2015 Land Rover LR2, downstream, and 2012-2013 Land Rover Range Rover Evoque, downstream.