Marine Engine Catalog
Browse our selection of remanufactured marine diesel engines. Each engine is rebuilt with marine-grade components and dyno tested before shipping.
Don't see your engine? Call (631) 991-7700 — we can source most marine diesel engines.
Why Choose Remanufactured Marine Engines?
A new marine diesel engine can cost $30,000–$100,000+. Our remanufactured marine engines deliver the same reliability and performance at a fraction of the cost.
Marine-Grade Quality
Every marine engine is remanufactured with corrosion-resistant components and marine-rated seals designed for saltwater environments.
Full Dyno Testing
Each engine undergoes comprehensive dynamometer testing simulating marine load conditions before shipping.
Save 40–60% vs New
Marine engines are expensive. Our remanufactured units deliver OEM performance at a fraction of the cost of a new marine engine.
Minimize Dock Time
Most marine engines ship within 3–5 business days. Get back on the water faster with our priority processing.
Expert Support
Our team includes marine diesel specialists who can help you match the right engine to your vessel and application.
Warranty Included
Every remanufactured marine engine comes with our comprehensive warranty for peace of mind on the water.
Engines by Application
Sport Fishing
Cummins QSB/QSC, CAT C7/C9
280–575 hp
High-performance engines for offshore fishing boats. Fast cruise speeds and reliable trolling.
Commercial Fishing
Cummins QSL/QSM, Detroit 6V92
270–660 hp
Durable engines built for long hours and heavy loads. Fuel efficient for extended trips.
Yachts & Cruisers
CAT C9/C12/C18, Cummins QSM
375–1,015 hp
Smooth, quiet engines for luxury vessels. Available in a wide range of horsepower ratings.
Workboats & Tugs
Cummins KTA 19, CAT C18
450–1,015 hp
Heavy-duty engines for demanding commercial applications. Built for continuous duty cycles.
Sailboat Auxiliaries
John Deere 6068, Cummins QSB
150–300 hp
Compact, reliable engines for sailboat auxiliary power. Fuel efficient and easy to maintain.
Patrol & Rescue
CAT C7, Detroit 6V92
270–500 hp
Fast-response engines for law enforcement and rescue vessels. Reliable performance when it matters most.
Marine Engine FAQ
How much does a remanufactured marine diesel engine cost?
Remanufactured marine diesel engines typically range from $5,000 to $22,000 depending on the make, model, and horsepower rating. Smaller engines like the Cummins QSB 6.7 start around $6,000, while larger engines like the Caterpillar C18 can reach $22,000. Call (631) 991-7700 for an exact quote for your vessel.
Can I use a truck engine in a marine application?
While truck and marine engines often share the same base block, marine engines have critical differences including marine-rated exhaust manifolds, heat exchangers, raw water pumps, marine-grade alternators, and corrosion-resistant components. We can supply engines configured for marine use with the proper accessories and cooling systems for your application.
What is the difference between marine and industrial diesel engines?
Marine engines are specifically configured for the marine environment with heat exchanger cooling (instead of radiator), marine exhaust manifolds, raw water pumps, and corrosion-resistant components. They also have different governor settings optimized for propulsion or generator duty cycles. Industrial engines use radiator cooling and are configured for land-based applications.
How long does a remanufactured marine engine last?
A properly maintained remanufactured marine diesel engine can last 5,000 to 15,000+ operating hours depending on the application. Displacement cruising and commercial fishing applications typically see 8,000–12,000 hours. High-performance sport fishing applications may see 5,000–8,000 hours. Regular oil changes, cooling system maintenance, and fuel filtration are key to maximizing engine life.
Do you ship marine engines nationwide?
Yes, we ship remanufactured marine engines to all 50 states. Marine engines are crated and shipped via freight carrier. We can arrange delivery to your marina, boatyard, or shop. Typical transit time is 3–7 business days depending on location.
Can you help me identify which engine my boat has?
Absolutely. Our marine diesel specialists can help you identify your engine based on your vessel make/model/year, the engine serial number plate, or photos of the engine. Call (631) 991-7700 and we'll help you find the exact replacement engine for your boat.