Sierra 18-55505 Mercury Outboard StarterSierra replacement outboard starter for Mercury Outboards.Features: Superior connection between the solenoid and the commutator brushes; Updated planetary gear and clutch gear spring to maximize life span and reliability; Updated solenoid design provides optimum performance by utilizing higher quality materials; New solenoid also offers an increased battery terminal length for easier installation; Seals are strategically integrated to reduce opportunities for water intrusion; Use with 18-6458 Solenoid; Interchangeable With: Mercury Marine; 50-8M0061073; 50-8M0096343; 50-8M0137789; 50-8M0142679; 50-8M0080274; 50-8M0187292;