Yamaha Pin, Dowel - 91810-20001-00. Precision-Engineered Alignment Pin for Yamaha Marine and Powersports Applications. The Yamaha - Pin, dowel - 91810-20001-00 is a genuine OEM component designed to ensure secure and accurate alignment between critical engine or assembly parts. Built to Yamaha's high-quality manufacturing standards, this dowel pin provides precise positioning during installation and maintains mechanical integrity under high-performance conditions.. Whether you're completing a re