O2 Oxygen Sensor for Buick, Cadillac, GMC, Chevy, Isuzu, Oldsmobile and Pontiac

The IWOKPHD O2 Oxygen Sensor is designed to replace worn sensors in a wide range of Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile and Pontiac models. Built to match OEM specifications, this sensor helps maintain accurate air–fuel ratio readings, supporting better engine performance, smoother idling, and lower emissions across participating vehicles. With a sturdy build and a direct-fit footprint, it’s a reliable choice for keeping your vehicle running cleanly and efficiently. Benefits & Tips - Accurate oxygen readings help optimize combustion, improving fuel economy and reducing exhaust emissions on affected GM family vehicles. - Direct-fit design using OEM-style numbers simplifies replacement and reduces install time. - Compatible with multiple OEM reference numbers and part variants, giving you flexibility for stock-minded repairs. Product Specifications - Brand: IWOKPHD - Part Type: O2 Oxygen Sensor - Sensor Type: Piezoelectric - Origin: Mainland China - OEM Numbers: 234-4650, 12559850, 12561776, 12562943, 12567127 - Manufacturer Part Numbers: 8125671270, 8972873520, 213-817, ES20319, 213-287 - Measuring Range: 234-4650 - Resolution: Upstream or Downstream - Fitment Notes: Please check the product pictures and fitment before ordering. If you are unsure, contact us before purchase; refunds may not be issued for wrong orders. - Application Focus: Fits a broad set of Buick, Cadillac, Chevrolet, GMC, Isuzu, Honda and other models listed in the product notes. Representative examples include Buick Century (V6-3.1, 2001–2004), Cadillac DeVille (V8-4.6, 2000–2003), Chevrolet Silverado 1500 (V6-4.3 and V8-5.3, Canada Built), GMC Sierra 1500 (V6-4.3 and V8-5.3, Canada Built), Isuzu Ascender (V8-5.3, 2003–2004), Honda Passport (V6-3.2, 2002), and more. Some models require two sensors (2 Required) for proper installation. - Package Includes: 1 x Oxygen Sensor - Warnings/Reminders: Verify fitment against your vehicle’s year, make and model and refer to OEM numbers listed. If in doubt, reach out before purchasing to avoid incorrect orders. All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty. At intercyprus.com since 2002 — trusted for quality and reliability.