We stock Genuine OEM Buick® Oxygen Sensors for your Buick Skyhawk. Investing in new OEM oxygen sensors can help improve the fuel efficiency and overall performance of your vehicle. These sensors monitor the amount of oxygen in the exhaust system and adjust the fuel-to-air ratio, ensuring your engine runs smoothly and with reduced emissions. Using OEM sensors can ensure a perfect fit and optimal performance for your specific vehicle, leading to improved reliability and longevity. Manufacturer's Warranty Included. Guaranteed Fit. Experts standing by.