Outboard Starter | 18-55506

The 18-55506 Sierra outboard starter delivers reliable engine starts with precision engineering built for marine conditions. Enhanced solenoid design and superior commutator connections ensure consistent performance, while upgraded planetary and clutch gears extend durability. Strategic sealing protects against water intrusion, and the extended battery terminal simplifies installation. Direct replacement for Mercury Marine 50-8M0088064, 50-8M0137769 & 50-8M0166297.