Yamaha - Drive Sprocket 15 Tooth Drivetrain Component 93812-15063-00. Overview. You can usually tell when a sprocket is wearing out-the drivetrain starts feeling rough, and power doesn't transfer as clean as it should. I've swapped out a lot of these over time, and it's one of those parts that makes a noticeable difference right away. The Yamaha Drive Sprocket 15 Tooth 93812-15063-00 keeps everything running smooth and aligned where it matters. It's a straightforward fix when you want to restore proper engagement and performance.. Key Features. • 15 Tooth Drive Configuration - Designed to deliver proper gearing and power transfer.. • Yamaha Precision Machining - Built to exact specifications for smooth chain engagement.. • Consistent Power Delivery - Helps maintain efficient drivetrain performance.. • Durable Metal Construction - Withstands wear, load, and continuous operation.. • Direct Replacement Fit - Installs cleanly with factory alignment and hardware.. Engine & Boat Compatibilit