Denso 234-4981 Oxygen Sensor - Downstream or Downstream Left

Denso OE Style Oxygen Sensor 234-4981

Denso 234-4981 is an OE-style heated oxygen sensor built for direct replacement on select Land Rover applications. It is engineered for exact fit and reliable signal performance, with a design focused on emissions control, fuel economy, and consistent engine operation.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct replacement installation
• 4-wire configuration
• 27.28 in. wiring harness length
• OE Style construction for select Land Rover LR4 and Range Rover Evoque applications
• Denso aluminum oxide trap layer helps protect the sensing element from silicone and lead contamination

Product Details

Denso’s OE Style line is built to match original equipment standards for fit and function. This 234-4981 oxygen sensor is made for precise replacement on 2014-2016 Land Rover LR4, downstream left, and 2014-2015 Land Rover Range Rover Evoque, downstream after the primary catalyst. The sensor supports accurate exhaust monitoring, which is important for maintaining proper air-fuel control and emissions system performance. This part cross-references Land Rover LR049884 and LR052425 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect downstream exhaust readings
• Reduced fuel efficiency caused by faulty sensor feedback
• Emissions test failures tied to sensor response issues
• Rough engine operation from inaccurate air-fuel data

Installation Notes and Tips

Confirm the vehicle position before ordering: this sensor fits 2014-2016 Land Rover LR4, downstream left, and 2014-2015 Land Rover Range Rover Evoque, downstream. Match the connector, wire count, and harness length to the original sensor before installation. For best results, inspect the exhaust threads and wiring routing during replacement, and verify the sensor location after installation.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for fit, function, and durability. The sensor’s contamination-resistant design supports long-term performance in demanding exhaust environments.