Stay X-TRA Cool the remainder of this summer by replacing the old cracked or damaged fan clutch blade in your 2003-2007 Ford 6.0L Power Stroke with the XDP X-TRA Cool Radiator Clutch Fan Blade XD373. Proper engine cooling is crucial when it comes to keeping your 6.0L alive. Over time, the factory fan blade develops cracks, and then Power Stroke owners don't see them until it's too late. Don't let a broken fan blade damage other underhood components or lower your cooling efficiency. Each fan blade features a composite plastic construction, and like XDP's other X-TRA Cool products, this is a direct-fit replacement for the factory component. For more information, call 800-343-7354 or click here.