The NEW GM Heated Oxygen Sensor #12679885 is a high-quality replacement sensor designed specifically for GM vehicles such as 2020 to 2026 Silverado and Sierra 2500HD with 6.6L gas engine, 2021 to 2025 Express and Savana 2500HD with 4.3L V6 and 6.6L V8 gas engines. This sensor is a genuine General Motors product, ensuring reliable performance. The sensor is compact with dimensions of 3 inches in height and weighs 0.19 lbs. It features a male connector type and is designed for front placement on the vehicle on either bank #1 or bank #2. This oxygen sensor is a performance part that meets OE/OEM part number 12679885, providing a perfect fit for your vehicle's exhaust and emission systems. New OEM part in box.