Yamaha - Drive Sprocket Drivetrain Component 93812-14035-00. Overview. You start noticing drivetrain wear pretty quickly when a sprocket begins to go-things get noisy, and power doesn't feel as clean. I've swapped out plenty of these on Yamahas where the chain was still decent, but the sprocket was the real issue. The Yamaha Drive Sprocket 93812-14035-00 helps bring everything back into proper alignment and smooth operation. It's a simple replacement that can make a big difference in how the machine runs.. Key Features. • Optimized Tooth Profile - Ensures smooth chain engagement and consistent power transfer.. • Yamaha Factory Engineering - Built to match original specs for proper fit and performance.. • Supports Drivetrain Longevity - Helps reduce uneven wear on chain and related components.. • Durable Metal Construction - Designed to handle load, friction, and demanding conditions.. • Direct Replacement Fit - Installs easily using factory mounting points and hardware.. Engine & Boat