O2 Oxygen Sensor 234-4650 for Buick, Cadillac, GMC, Chevy Vehicles

Upgrade or replace your O2 oxygen sensor with the IWOKPHD 234-4650 — a precise, brand-new sensor designed to restore accurate exhaust-gas monitoring on GM vehicles. This part helps your engine manage the air-fuel mix more effectively, improving fuel efficiency, reducing emissions, and maintaining smooth power delivery across Buick, Cadillac, Chevy, and GMC models.

The 234-4650 oxygen sensor from IWOKPHD is a heating-type, piezoelectric sensor that supports both upstream and downstream installation depending on your vehicle’s configuration. It carries OEM numbers including 234-4650, 12559850, 12561776, 12562943, and 12567127 for a dependable match to your original part. Origin: Mainland China. Every unit is 100% brand new and undergoes rigorous testing before shipment to ensure a stable, reliable fit for your car.

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

Please verify fitment before ordering. If you are unsure about compatibility, contact us before you order. Otherwise we will not refund you money if you make a wrong order, thanks a lot.

Benefits & Tips

• Restore precise oxygen-sensor feedback to your ECU, improving fuel economy and reducing exhaust emissions.
• Promote smoother idle and more confident acceleration by maintaining optimal air-fuel ratio across driving conditions.
• Direct-fit replacement with OEM-number compatibility for a hassle-free install on many GM models.

Product specifications

• Brand: IWOKPHD
• OEM numbers: 234-4650, 12559850, 12561776, 12562943, 12567127
• Sensor Type: Piezoelectric
• Heating Type: Heating Type
• Measuring Range: 234-4650
• Installation: Upstream or Downstream (depends on vehicle)
• Origin: Mainland China
• Condition: 100% brand new
• Quality assurance: Each item is strictly tested before shipment
• Fitment highlights: Wide compatibility with GM vehicles, including Buick Century, Rainier, Rendezvous; Cadillac DeVille, Eldorado, Escalade, Seville; Chevrolet Astro, Blazer, Malibu, Monte Carlo, S10, Silverado 1500/2500; GMC Envoy, Sierra 1500, Jimmy, Safari, and more. Some models may require two sensors (2 Required) or specific side placement.

Package includes:

• 1 x Oxygen Sensor

Warnings/Reminders

Please ensure correct fitment before purchase. If you’re unsure about compatibility, contact us for guidance prior to ordering. Refunds may not be offered for incorrect orders.

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