Sierra 18-55506 Outboard Starter for Mercury Marine 135+ HP Engines

The Sierra 18-55506 is a high-performance replacement starter designed specifically for Mercury Marine outboard engines rated at 135 horsepower and above. This permanent magnet gear reduction starter delivers reliable starting power with improved efficiency and durability compared to conventional starter designs.

Key Features:

• Permanent magnet gear reduction design for consistent, powerful cranking
• 6:1 gear reduction ratio provides optimal torque multiplication
• Engineered for Mercury Marine 135+ HP outboard applications
• Direct replacement for OEM starters, ensuring proper fit and function
• Durable construction for long service life in marine environments

Sierra Marine parts are manufactured to meet or exceed OEM specifications, making this starter an excellent choice for maintenance, repair, or replacement of your Mercury outboard's starting system. The gear reduction design reduces the electrical load while increasing cranking torque, ensuring dependable starts even in challenging conditions.