Sierra 18-55507 Starter Outboard - YamahaThe Yamaha Starter Outboard is designed to stand up to the harsh marine environments. The Starter features a painted surface and a Duckbill valve. It is also instructed to reduce water intrusion improving the durability of housing. The water intrusion has reduced opportunities due to its strategically integrated seals. Features: Painted surface; Duckbill valve; Improved Solenoid Design - maximum reliability; Robust clutch - gear spring to maximize life span and reliability; Superior connection between the solenoid and the commutator brushes;