Oxygen Sensor Downstream and Upstream for Chevrolet Impala

Upgrade your GM vehicle’s exhaust monitoring with the IWOKPHD Oxygen Sensor Downstream and Upstream kit. This two-piece set is designed to fit a broad range of GM models, including Chevrolet Impala, Malibu, Malibu Limited, Colorado, and more. Each sensor monitors exhaust gas composition to help the engine maintain the correct air–fuel ratio, supporting smoother idling, improved drivability, and better emission control. The kit aligns with OEM numbers 12627139, 12627140, 12665162, and 234-4974, ensuring wide compatibility across the models listed in the product notes. Featuring a heated, magnetic induction sensor design, these units respond quickly to changing exhaust conditions, including cold starts. Origin: Mainland China. Note: the only way to be 100% sure the part fits your vehicle is to compare with your original part and part numbers.

Benefits & Tips

• Two sensors included to replace both upstream and downstream O2 positions where required, helping maintain proper fuel trim and emissions across compatible GM vehicles.
• Heated magnetic induction sensors deliver faster response times and reliable operation in cold-start conditions, supporting steady engine performance.
• Broad compatibility with popular GM models means fewer fit questions and a straightforward replacement for several Buick, Chevrolet, GMC, and Cadillac vehicles.

Product specifications

• Brand: IWOKPHD
• Sensor Type: Magnetic Induction
• Heating: Yes (heated)
• Measuring Range: Lambda Oxygen O2 Air Fuel Ratio Sensor
• OEM No.: 12627139, 12627140, 12665162, 234-4974
• Origin: Mainland China
• Package Includes: 2pcs

Applications & Compatibility

• Buick Regal — 2014-2017, 2.0L 1998CC 122Cu. In. l4 GAS DOHC Turbocharged; Base, VIN X, FWD, Engine LTG
• Chevrolet Malibu — 2013-2015, 2.5L 2457CC 153Cu. In. l4 GAS DOHC Naturally Aspirated; LS, VIN A, Engine LCV
• Chevrolet Malibu — 2013-2015, 2.0L 1998CC 122Cu. In. l4 GAS DOHC Turbocharged LT; VIN X, Engine LTG
• Chevrolet Impala — 2014-2015, 2.5L 2457CC 153Cu. In. l4 GAS DOHC Naturally Aspirated LS; VIN L, Engine LKW
• Chevrolet Colorado — 2015-2019, 2.5L 2457CC 153Cu. In. l4 GAS DOHC Naturally Aspirated Base; VIN A, RWD, Engine LCV
• Chevrolet Malibu Limited — 2016, 2.5L 2457CC 153Cu. In. l4 GAS DOHC Naturally Aspirated LS; VIN A, Engine LCV
• Chevrolet Impala — 2016-2019, 2.5L 2457CC 153Cu In l4 FLEX DOHC Naturally Aspirated LS; VIN A, Engine LCV
• GMC Canyon — 2015-2019, 2.5L 2457CC 153Cu In l4 GAS DOHC Naturally Aspirated Base; VIN A, RWD, Engine LCV

Additional compatibility highlights show a wheelbase of 128.3 inches for the following models: Buick Regal (2014-2015), Cadillac CTS (2014-2015), Cadillac ATS (2013-2015), Chevrolet Corvette (2014-2015), Chevrolet Impala (2014-2015), and Chevrolet Malibu (2013-2015).

Warnings / Reminders

• 1.Please check the picture and the part number carefully to make sure that you bought the right part for your car.
• 2.If you can not make sure which item fit for your car,please send the Part Number Or the Original product photos to us confirm it before order.
• 3.The only way to be 100% sure that the part will fit your vehicle is to check your original part. We will check for you and reply soon within 24 hours.

Warranty & Service

Warranty: 2 years. Warranty Type: Replacement Warranty. Any question will be replied within 24 hours except weekends and holidays. All items ship within 2 working days after payment is confirmed. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer’s responsibility. Shipping time is a reference; seasonality and weather can affect delivery.

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