QIJIAUTO Automotive O2 Oxygen Sensor 213-4229 234-4668 for Buick and Cadillac

The QIJIAUTO Automotive O2 Oxygen Sensor set includes four sensors designed for compatibility with various Buick and Cadillac models. These sensors help resolve fault lights, reduce fuel consumption, and enhance overall vehicle performance. With a unique protective layer to prevent sensor damage, they are engineered for smooth acceleration and improved fuel economy. The package includes both upstream and downstream sensors, ensuring a comprehensive solution for your vehicle's oxygen monitoring needs. • Compatible with Buick Allure 2005-2009 • Includes 4 O2 sensors for comprehensive coverage • Reduces fuel consumption and improves engine performance • Unique protective layer prevents sensor damage • Designed for easy installation with original vehicle specifications