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Pre-Owned Caterpillar 3408 Marine Propulsion EngineContinuous Rating: 455HP @ 1800RPM
24V Electric Starter
Heat Exchanger Cooled
IMO / RINA Engine Certified
Approximately 12000 hours since new
Please refer to product document “Build Sheet” for further information
| Item Number | E4556 |
|---|---|
| Rpm | 1800 |
| Fuel Type | |
| Enclosure Portable | |
| Manufacturer | |
| Serial Number Prefix | 99U |
| Horsepower | 455 |
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When your vessel demands dependable, hard-working power that won't let you down in critical situations, this pre-owned Caterpillar 3408 Marine Propulsion Engine delivers the proven performance commercial operators have trusted for decades. Rated at a robust 455 horsepower at 1800 RPM, this powerhouse is engineered to handle the most demanding marine applications with the durability and efficiency that made Caterpillar the gold standard in marine propulsion.
This isn't just another used engine—it's a carefully maintained piece of marine machinery with approximately 12,000 operating hours, representing substantial remaining service life when properly maintained. The Caterpillar 3408 series is renowned for its longevity, with many units exceeding 20,000+ hours in continuous commercial service. You're investing in a proven workhorse that's just hitting its stride.
The Caterpillar 3408 marine engine was specifically engineered to withstand the harsh realities of saltwater environments, constant vibration, and the demanding duty cycles of commercial and recreational marine use. Every component is built to Caterpillar's exacting standards, from the marinized cooling system to the heavy-duty internal components designed for extended service intervals.
Unlike many used marine engines sold with minimal information, this unit comes with a comprehensive build sheet providing detailed specifications, configuration details, and service history. This documentation is invaluable for installation planning, maintenance scheduling, and ensuring compatibility with your vessel's requirements.
Choosing a Caterpillar engine means choosing access to the world's most extensive marine service network. Parts availability, technical support, and qualified service technicians are available at ports worldwide—a critical consideration when your livelihood or passion depends on reliable propulsion. The 3408's proven design means mechanics and engineers are intimately familiar with service procedures, reducing downtime and maintenance costs.
At 12,000 hours, this engine represents an exceptional value proposition. With proper maintenance, you're looking at years of reliable service ahead. The 1800 RPM rating ensures lower operating stress, reduced fuel consumption compared to higher-revving engines, and extended component life—all translating to lower total cost of ownership.
This is professional-grade marine propulsion from an industry leader, backed by decades of proven performance in the world's most demanding marine environments. Whether you're repowering a commercial vessel, replacing a failed engine, or building a new project, the Caterpillar 3408 offers the reliability, power, and global support infrastructure that serious mariners demand.
Detailed build sheet documentation available for review. Contact us today to discuss your specific application requirements, installation support, and delivery options. Our marine propulsion specialists are ready to help ensure this engine is the perfect fit for your vessel.




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