Genuine Volvo Penta alternator pulley 841811. Also stamped “102659”. 3″ in diameter and 9/16″ wide. New old stock item in original packaging. Skippers Marine specializes in new old stock, recycled and those hard to find marine parts and accessories. Please check out my other Ebay store items. Don’t see what you are looking for? Feel free to send an email request. 6-9758