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WSM Rotary Valve for Sea-Doo 580 & 720 High-performance replacement rotary valve engineered by WSM to restore precise intake timing and reliable throttle response on popular Sea-Doo 580 and 720 personal watercraft. Direct fit: Designed to replace OEM rotary valves on Sea-Doo 580 and 720 models for a hassle-free installation. Durable stainless steel: Corrosion-resistant construction for long life in marine environments. Improved reliability: Restores proper sealing and timing to reduce engine misfires and improve low-end torque. OEM-quality performance: Precision machined to meet original equipment specifications. Easy to service: Robust design simplifies routine maintenance and rebuilds. Whether you're repairing a classic Sea-Doo or upgrading for better throttle feel, the WSM Rotary Valve delivers durable, OEM-fit performance that keeps your machine running strong on the water.