Oxygen Sensor Lambda for Cadillac STS, Saab 9-5/9-7X, Hummer H3/H3T

Replace a worn or failing oxygen sensor with this IWOKPHD Lambda (Oxygen) Sensor, a direct-fit, heated replacement designed for a broad range of GM vehicles. It serves as a precise exhaust gas monitor, helping to optimize the air–fuel ratio, reduce emissions, and restore engine performance. With a robust build and OE-style connectors, it’s built to install quickly and reliably on your Cadillac STS, Saab 9-5/9-7X, Hummer H3/H3T, and other supported GM models.

Benefits & Tips

• Restore accurate readings to improve fuel economy and reduce emissions by maintaining optimal combustion conditions.
• Help prevent idle roughness, hesitation, and flashes of the check engine light caused by a failing oxygen sensor.
• Great for DIY enthusiasts: a straightforward, direct-fit replacement that mirrors the original part’s mounting and connector style. Always verify the part number against your vehicle’s OE reference before installation.

Product specifications

• Brand: IWOKPHD
• Sensor Type: Piezoelectric
• Heating Type: Heating Type
• OEM No.: 12592592
• Part numbers (related): 12588036, 12592591, 12617648, 12639693, 12646200, 12656543, 12656071, 8125925910, 8125925920, 234-4331, 2344331, 234 4331, 25024698, 250-24698, 15131, 21561, 2133207, 213-3207, ES20355
• Measuring Range: 250-24698, 15131, 21561, 2133207, 213-3207, ES20355
• Resolution: 12656071, 8125925910, 8125925920, 234-4331, 2344331, 234 4331
• Repeatability: For CHEVROLET COLORADO EXPRESS 3500, IMPLA MALIBU TRAILBLAZER models listed
• Applications (selected): For CADILLAC STS 2006-2009; For SAAB 9-5 2011; For SAAB 9-7X 2006-2009; For HUMMER H3 2006-2010; For HUMMER H3T 2009-2010; For CHEVROLET COLORADO 2006-2012; For GMC CANYON 2006-2012; For GMC ENVOY 2006-2009; For GMC SAVANA 3500 2013-2015; For GMC SAVANA 3500 2013-2015; For ISUZU ASCENDER 2006-2008; For ISUZU I-280/290/350/370 (2006-2008); For BUICK REGAL 2011-2017; For BUICK LA CROSSE 2010-2016; For BUICK RAINIER 2006-2007; For CHEVROLET IMPALA 2014; For CHEVROLET MALIBU 2013-2014; For CHEVROLET TRAILBLAZER 2006-2009
• Origin: Mainland China
• Warranty: 2 years (Replacement Warranty)

Package includes:

• 1 x Oxygen Sensor Lambda

Warnings/Reminders

• Please check the picture and the part number carefully to make sure that you bought the right part for your car.
• If you cannot confirm which item fits your car, please send the Part Number or the Original product photos to us to confirm before order.
• 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 within 24 hours.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

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