Denso 234-4454 Oxygen Sensor - Downstream or Downstream Left

Denso OE Style Oxygen Sensor 234-4454

Denso 234-4454 is an OE Style heated oxygen sensor built for specific-fit replacement on select Volvo and Land Rover applications. It is engineered for downstream use and is designed to match factory mounting, connector, and wiring requirements for a direct replacement on vehicles such as the Volvo S60, XC60, XC70, S80, V60, V70, C30, S40, and V50, plus Land Rover LR4 and Range Rover Sport applications.

Key Features

• Heated oxygen sensor for downstream exhaust monitoring
• Specific-fit design for direct replacement on listed applications
• 4-wire configuration with male connector
• Threaded mounting type with 0.708 in. thread diameter
• 18.11 in. wiring harness length for OE-style routing
• Built to Denso OE standards for fit and function
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

OE Style Construction

Denso’s OE Style line focuses on exact replacement fitment and factory-style performance. The 234-4454 oxygen sensor is precision built to match the original sensor layout, helping simplify replacement on downstream positions where accurate exhaust feedback matters. This part cross-references Bosch 15178 and NTK 25646 for the same application.

Vehicle Fitment

• Fits 2015-2016 Volvo S60, downstream.
• Fits 2013 Volvo S60, downstream.
• Fits 2016 Volvo V60, downstream.
• Fits 2010-2016 Volvo XC60, downstream.
• Fits 2007-2015 Volvo S80, downstream.
• Fits 2015 Volvo V60, downstream, from chassis 10779.
• Fits 2015 Volvo XC60, downstream, from chassis #179185.
• Fits 2008-2015 Volvo XC70, downstream.
• Fits 2010-2013 Land Rover LR4, downstream left.
• Fits 2010-2013 Land Rover Range Rover Sport, downstream left.
• Fits 2012 Volvo XC60, downstream, from chassis/VIN #179185.
• Fits 2007-2010 Volvo C30, downstream.
• Fits 2004-2010 Volvo S40, downstream.
• Fits 2005-2010 Volvo V50, downstream.
• Fits 2008-2010 Volvo V70, downstream.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn downstream sensor
• Reduced fuel economy caused by inaccurate exhaust readings
• Slow sensor response from contamination or age
• Exhaust monitoring faults on Volvo and Land Rover applications

Installation Notes

Confirm the connector style, wire count, thread diameter, and downstream position before installation. This sensor is specific fit, so matching the chassis note on applicable Volvo XC60 and V60 models is important for correct application selection. Use the listed vehicle fitment to verify compatibility with your exact model year and position before replacing the original sensor.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement fitment and dependable operation. The aluminum oxide trap layer is used to help protect the sensing element from silicone and lead contamination, supporting long-term sensor durability in demanding exhaust conditions.