Open box item in like‑new condition. Box was opened only to inspect and verify the contents. Item appears new, unused, and fully functional. ULINK 39051 A/C Drive Belt Tensioner Assembly with Pulley for Ford Super Duty 6.4L V8 2008-2010A direct replacement automatic belt tensioner assembly for the Air Conditioning drive on Ford F-250, F-350, F-450, and F-550 Super Duty trucks equipped with the 6.4L Power Stroke diesel engine from 2008 to 2010. Includes the pre-installed pulley and is ready for installation. Features Complete assembly with pre-mounted pulley for the A/C belt Spring-loaded design maintains proper belt tension and alignment OE-style fit for the 6.4L V8 Power Stroke accessory driveSpecifications Type A/C drive belt tensioner with pulley Application Ford Super Duty 20.