This Four Seasons AC Compressor and Clutch Assembly (Part No. 57961) is a top-quality replacement for your Chevrolet Lumina or Oldsmobile Silhouette. The assembly is made of durable metal and features a bolt-on mounting style and a multi-groove serpentine pulley belt type. Please note that this product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm, as indicated by the California Prop 65 Warning. It has a clutch maximum diameter of 4.25 inches and a pulley diameter of 4.25 inches, with a pulley groove quantity of 6. This item is not a universal fitment and has an item weight of 14 pounds. Interchange Part Numbers are 1131874 and 2724745, while the OE/OEM Part Number is 1131813. Buy with confidence from Motors. Exact item is shown. This is a remanufactured item with partial original packaging, which was damaged in transit. No returns if installed. Includes the pulley. Does not include mounting hardware. No core charge. Please review our business policies in our store for information regarding returns, shipping and warranties. Most items have 30-day returns along with free fast shipping in 1 business day (see details). Message us anytime. Buy from a trusted 16+ year seller!