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4.5L 250 HP

Brief Summary

A 6-cylinder sterndrive power plant has been released by the folks in Fond du Lac, Wisconsin. This new, purpose-built 4.5 L marine engine is made by Mercury Marine which has full control over its production. This opportunity has resulted in a more powerful V6 engine that has replaced the venerable 5.0L small block in the never-ending quest to shed weight and increase performance.

Key Features

  • Mercury in-house design
  • More power, less weight, greater efficiencies
  • Smartcraft integration for single or twin applications
  • Numerous drive units and ratios are available


Type of Engine
Number of Cylinders 6
Horse Power 250
Configuration V-6
Fuel Type Gasoline
Fuel Delivery Fuel Injected
Shaft Length Options
Shift Throttle Control
Steering Control
Recommended Fuel
Alternator Output
CARB Rating
Engine Monitoring System

Captain's Report