Description
Product Overview
The Denso 5399484-Kit Oxygen Sensor Set supports the maintenance and repair of your vehicle’s emissions system. This kit provides an OE-level, all-in-one set of matched components designed for precision fitment and reliability. Symptoms indicating potential issues may include poor fuel economy, rough idling, or increased emissions. The Denso 5399484-Kit addresses these concerns by supplying the necessary sensors to maintain proper air-fuel ratios and emissions control.
Kit Contents
- 2 x Denso – (234-4266) Downstream Oxygen Sensors – OE Style
- 2 x Denso – (234-9074) Upstream Air / Fuel Ratio Sensors – OE Style
Cross Reference Numbers
This Denso 5399484-Kit is equivalent to or replaces the following part numbers: 234-4266, 234-9074.
Vehicle Compatibility
- Land Rover Range Rover 4.2 V8 (2006–2009)
- Land Rover Range Rover 4.4 V8 (2006–2009)
This kit also fits other applications. Please use the vehicle selector tool to verify compatibility before purchase.
Why Shop at eEuroparts.com?
- Expertise You Can Trust: Over 25 years specializing exclusively in European vehicles.
- Kits That Fit™ – complete, curated repair solutions with zero guesswork.
- Fitment Confidence: Industry-leading catalog accuracy ensures you get the right part the first time.
- Fast, Reliable Delivery: Most orders ship same or next business day from our U.S. warehouses.
- Transparent, Honest Pricing: Competitive prices with no hidden fees ever.
- Trusted Since 2000: Proudly serving the European car community for over two decades.
Frequently Asked QuestionsWhat symptoms may indicate a faulty oxygen sensor?
Symptoms can include poor fuel efficiency, rough engine performance, or increased emissions, which may signal the need for replacement of the oxygen sensors.
How do I know if I need to replace my air-fuel ratio sensors?
Signs that the air-fuel ratio sensors may need replacement include trouble codes related to fuel mixture, poor engine performance, or significant changes in exhaust emissions.
What is the difference between upstream and downstream oxygen sensors?
Upstream sensors measure the air-fuel mixture before it enters the catalytic converter, while downstream sensors monitor the efficiency of the catalytic converter after the exhaust gases have passed through it.
Are these sensors compatible with other vehicle makes?
These sensors are specifically designed for certain Land Rover models. Refer to the vehicle compatibility section or use the vehicle selector tool for verification.
What diagnostic trouble codes (DTC) can be associated with oxygen sensor issues?
DTC codes such as P0131, P0132, P0133, and P0134 may indicate problems with oxygen sensors, affecting overall engine performance and emissions control.
Order Denso 5399484-Kit today to support a complete, well-matched repair for your vehicle.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.
