Mercury Racing 450R
4.6L supercharged 450 hp performance outboard. Excellent power-to-weight and increasingly common on high-end center consoles. Run hard by nature; the supercharger and higher state of tune mean service discipline matters more than on a standard FourStroke.
Service and what to check
Supercharged — follow the accelerated service schedule. On multi-engine rigs confirm all units share hours and service history.
Watch usage: above roughly 150 hours/year, this family starts losing reliability points — always weigh total hours against the boat's age, and on any outboard or I/O over a few years old, insist on a compression or leak-down test before money moves.
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