Lambda Oxygen Sensor for Chevrolet Silverado Suburban Express
The Lambda Oxygen Sensor for Chevrolet Silverado Suburban Express is a carefully engineered direct-fit replacement designed to restore precise oxygen sensing, improve fuel economy, and reduce emissions for a wide range of GM vehicles. With an aim to keep your engine running smoothly, this sensor delivers accurate readings to the ECU, helping your vehicle maintain ideal air-fuel ratios and consistent performance across daily driving, towing, and cargo-hauling tasks.
This sensor features a magnetic induction sensing element and a heating type configuration for faster warm-up, so your engine reaches optimal efficiency quicker after startup. OEM compatibility is broad, covering part numbers such as 234-4407, 25333812, 234-4651, and 12559849, and it is suitable for engines commonly found in 4.3L, 4.8L, and 5.3L configurations. The part is designed to integrate seamlessly with models including CHEVROLET EXPRESS, CHEVROLET SILVERADO, CHEVROLET SUBURBAN, CHEVROLET TAHOE, GMC SIERRA, GMC YUKON, GMC SAVANA, HUMMER H2, and related variants spanning 2002–2007, ensuring reliable performance across multiple years and trims.
By replacing a worn or failing oxygen sensor, you can expect quicker startup dynamics, steadier idle, improved throttle response, and cleaner exhaust emissions. This contributes to better fuel efficiency and reduces the likelihood of check engine light faults caused by inaccurate oxygen readings. The sensor’s robust build is designed for long-term operation in typical driving conditions, delivering consistent measurements essential for modern engine management systems.
Benefits & Tips
- Restore accurate air-fuel ratio readings to keep your engine running efficiently and prevent unnecessary fuel consumption.
- Improve throttle response and idle stability, especially on vehicles with high mileage or long-term sensor wear.
- Use as part of preventive maintenance on compatible GM vehicles to help avoid check engine light repairs and maintain emissions compliance.
Product specifications
- Compatible models / Applications: for CADILLAC ESCALADE 2003-2006; for CHEVROLET EXPRESS 1500/2500/3500 2003-2007; for CHEVROLET SILVERADO 1500/2500/3500 2002-2007; for CHEVROLET SUBURBAN 1500 2006 and 2500 2002-2006; for CHEVROLET TAHOE 2003-2005; for GMC SAVANA 1500/2500/3500 2003-2007; for GMC SIERRA/SIERRA CLASSIC 2002-2007; for GMC YUKON/YUKON XL 2002-2007; for HUMMER H2 2003-2006 (see full list in product details).
- OEM numbers: 234-4407, 25333812, 234-4651, 12559849
- Part Number: 25333812 / 234-4407 / 2344407 / 234-4651 / 12559849
- Sensor Type: Magnetic Induction
- Heating Type: Heating Type
- Measuring Range: 234-4407
- Origin: Mainland China
- Hysteresis (engine displacements supported): 4.3L, 4.8L, 5.3L
Package includes:
- 1 x Lambda Oxygen Sensor
Warnings / Reminders
- Please check the picture and the part number carefully to ensure you bought the right part for your car.
- If you are unsure which item fits your vehicle, please send the Part Number or the original product photos to us for confirmation before ordering.
- The only way to be 100% sure the part will fit your vehicle is to check your original part; we will verify for you and reply within 24 hours.
Warranty & Certification
All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.
Warranty: 2 years (Replacement Warranty). All items are shipped within 2 working days after payment is confirmed. Any questions will be answered within 24 hours, excluding weekends and holidays.
At intercyprus.com since 2002 — trusted for quality and reliability.