MerCruiser 4.5L 250 HP Inboard Engine with Transom (Mechanical Throttle & Shifting)

The MerCruiser 4.5L 250 HP inboard is a powerful, reliable, and efficient marine engine designed to deliver exceptional performance on the water. Built with Mercury’s exclusive marine-purpose architecture, it features a compact, lightweight design that maximizes power while optimizing fuel efficiency.

This package includes the complete transom assembly with mechanical throttle and shifting, ensuring smooth control and straightforward installation. Ideal for repower projects or new builds, the MerCruiser 4.5L 250 HP provides outstanding mid-range torque, quick acceleration, and quiet operation—perfect for cruisers, sport boats, and runabouts.

Technical data

Key Features:

• 4.5L V6 MerCruiser inboard engine

• 250 horsepower output

• Includes complete transom assembly

• Mechanical throttle & shifting controls

• Excellent fuel economy with low emissions

• Optimized mid-range torque for better acceleration

• Compact design for easier installation and service

• Ideal for leisure, sport, and family boats

Complete Package Includes:

• MerCruiser 4.5L 250 HP Engine Assembly

• Complete Transom Shield Assembly

• Mechanical Control Cables

• Engine Mounting System

• Freshwater Cooling Heat Exchanger

• Marine Transmission

• Drive Coupler and Shaft Log

• Installation Hardware Kit

• Technical Manuals