The MerCruiser 540 BRAVO 450 HP (8M0113304) is a high-performance marine gasoline engine designed for Bravo sterndrive propulsion systems used in performance boats, offshore powerboats, and high-speed recreational vessels. Built around a 540 cubic-inch V8 engine platform, this model delivers strong acceleration and high horsepower output for demanding marine environments.

Producing 450 horsepower within a wide-open throttle range of approximately 4600–5000 RPM, the engine is designed as a service replacement or performance upgrade for Bravo-drive sterndrive applications.

The engine uses a robust V8 architecture with high-performance internal components, making it suitable for offshore boats and high-speed cruising vessels that require reliable gasoline propulsion.