How much does a marine diesel engine cost?
Marine diesel engines typically cost between $5,000 and $50,000 or more depending on size, horsepower, and whether the engine is new, used, or rebuilt. Smaller vessel engines are on the lower end, while large commercial units can exceed $100,000.
Typical Marine Diesel Engine Price Ranges
| Engine Type | Horsepower Range | Estimated Price |
|---|---|---|
| Small diesel-powered vessels which are uncommon for commercial use | 20–50 HP | $5,000–$12,000 |
| Mid-sized workboats or cruisers | 100–400 HP | $15,000–$35,000 |
| Heavy-duty commercial diesel engines | 500–1,500+ HP | $40,000–$100,000+ |
| Rebuilt or used engines | Varies | Often 30–60% less than new |
Pro Tip: Buying a rebuilt engine from a trusted source (like Depco) can save thousands while still delivering reliable performance.
Factors That Affect Marine Engine Cost
Related Questions
How much does it cost to replace a marine diesel engine?
Replacing a marine diesel engine typically costs $10,000 to $30,000+ depending on engine size, installation complexity, and whether you’re purchasing new, used, or rebuilt. Labor and haul-out fees can add several thousand dollars to the total.
How much does a new diesel engine cost?
A new diesel engine for marine use typically ranges from $10,000 to over $100,000, depending on horsepower, emissions compliance, and brand. Smaller engines may fall below $10,000, but most commercial-grade units start at higher price points.
How much does a used marine diesel engine cost?
Used marine diesel engines generally cost 30–60% less than new, with pricing typically between $7,000 and $40,000+ depending on size, engine hours, and whether the unit is as-is or rebuilt. Rebuilt engines with test reports and warranties offer greater reliability at a competitive price.
Looking for cost-effective options?
Browse Depco’s rebuilt and used marine engines to find reliable units at a fraction of the cost of new.
