This high-quality fan blade is designed to fit perfectly with your vehicle's engine cooling system. It is made from durable nylon material and features clockwise rotation for efficient cooling. With a length of 19.5in and width of 19.2in, it is a perfect fit for your car or truck.The fan blade is manufactured by GM Genuine Parts and has an interchange part number of 621-321 and 85525781. It also has a superseded part number of 15168635 and 15877356. The item height is 3in and the weight is 2.62lb. This fan blade is an essential component of your engine cooling system and will keep your vehicle running smoothly.