Sierra 18-55505 Outboard Starter for Mercury Marine Engines

The Sierra 18-55505 is a premium replacement outboard starter designed specifically for Mercury Marine engines. This high-performance starter is engineered to deliver reliable starting power in harsh marine environments, making it an essential component for maintaining your outboard motor's dependability.

Key Features:

• Superior connection between the solenoid and commutator brushes for enhanced electrical performance
• Updated planetary gear and clutch gear spring to maximize lifespan and reliability
• Advanced solenoid design utilizing higher quality materials for optimum performance
• Increased battery terminal length for easier installation
• Strategically integrated seals to reduce opportunities for water intrusion

OEM Cross-Reference:

This starter replaces Mercury Marine part numbers 50-8M0061073, 50-8M0080274, 50-8M0096343, 50-8M0137789, 50-8M0142679, and 50-8M0187292. Each Sierra product meets or exceeds the original equipment specifications, ensuring reliable performance and long service life.

Sierra's engineering improvements focus on combating the corrosive marine environment that can shorten starter life. The enhanced sealing system and quality materials work together to provide years of dependable service in demanding saltwater and freshwater applications.