



🔥 Drive smarter, cleaner, and greener with GM’s precision oxygen sensor!
The GM Genuine Parts 12661898 Heated Oxygen Sensor is a factory-spec sensor engineered to measure oxygen levels in exhaust gases with ±1% accuracy. Designed to optimize your GM vehicle’s air/fuel ratio for improved fuel economy, emissions, and engine performance, this heated sensor quickly reaches operating temperature and withstands up to 800°F. Backed by GM’s rigorous standards, it guarantees a perfect fit and reliable durability as a true OE replacement.





| Brand | GM GENUINE PARTS |
| Item dimensions L x W x H | 18 x 1.5 x 1.1 inches |
| Item Weight | 3.36 ounces |
| Style | Modern |
| Measurement Accuracy | ±1% |
| Measuring Range | 0% - 20% |
| Mounting Type | Flange Mount |
| Output Type | electrical signal |
| Sensing Distance | 2 Inches |
| Specific Uses For Product | Oxygen Sensor |
| Upper Temperature Rating | 800 Degrees Fahrenheit |
| UPC | 808709410607 |
| Global Trade Identification Number | 00808709410607 |
| Manufacturer | ACDelco |
| Model | Heated Oxygen Sensor |
| Product Dimensions | 18 x 1.5 x 1.1 inches |
| Item model number | 12643903 |
| Exterior | Painted |
| Manufacturer Part Number | 12661898 |
| OEM Part Number | 12661898 |
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