Description
Product Overview
The Denso 5399414-Kit Oxygen Sensor Set supports the replacement of critical oxygen sensors in your vehicle’s emission system. This kit provides an OE-level, all-in-one set of matched components designed for precision fitment and reliability. Symptoms of failing oxygen sensors may include poor fuel efficiency, increased emissions, and engine misfires. The Denso 5399414-Kit is built to meet the demands of your vehicle’s emission control system.
Kit Contents
- 2 x Denso – (234-4875) Downstream Oxygen Sensors – OE Style
- 2 x Denso – (234-5135) Upstream Air / Fuel Ratio Sensors – OE Style
Cross Reference Numbers
This Denso 5399414-Kit is equivalent to or replaces the following part numbers: 234-4875, 234-5135.
Vehicle Compatibility
- BMW M3 4.0 V8 (2008–2013)
This kit also fits other applications. Please use the vehicle selector tool to verify compatibility before purchase.
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Frequently Asked QuestionsWhat are the symptoms of a failing oxygen sensor?
Common symptoms include a check engine light, poor fuel economy, and rough engine performance.
How do I know if I need to replace my oxygen sensors?
If you experience misfires or notice a decrease in fuel efficiency, it may indicate that the oxygen sensors are failing.
Can I replace the upstream air/fuel ratio sensor alone?
While it is possible to replace just the upstream sensor, it is recommended to inspect both upstream and downstream sensors for optimal performance.
What diagnostic trouble codes (DTC) are associated with oxygen sensor issues?
Common DTCs include P0131, P0132, P0133, and P0134, which indicate problems with the oxygen sensors.
Are these sensors compatible with my vehicle’s emission system?
These sensors are designed specifically for the listed BMW model to meet emission system requirements.
Order Denso 5399414-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.
