373-522 kW | 500-700 hp

• Proven legacy in tough commercial marine environments, hard earned over the last 25 years
• Designed to withstand the challenging conditions commercial marine operators often face; this same reliable, durable power is now available for recreational boating applications, including super yachts and yacht support vessels
• IMO Tier I certified and many ratings are also IMO Tier II certified
• Covered by a comprehensive one year warranty and backed by Cummins global service network
• Built at Seymour Engine Plant in Seymour, IN, U.S. and Cummins India Limited in Pune, India

Features & Benefits

Engine Design – Rugged in-line six cylinder designed for heavy duty applications. Replaceable wet cylinder liners for longer life and lower rebuild costs. Individual, four valve design cylinder heads for improved economy and performance. Gallery cooled pistons for maximum durability

Fuel System – Dependable Cummins PT fuel system can be operated mechanically or with CENTRY electronics for precise engine fueling. Step Timing Control (STC) allows for smooth engine acceleration under load. Premium fuel injectors utilize ceramic components for increased durability

Cooling System – Keel cooled or engine mounted heat exchanger system available. Spin-on Cummins water treatment filters for protection against cooling system corrosion

Exhaust System – Water cooled exhaust manifold reduces emissions and cools engine surface temperatures

Air System – Top mounted Cummins turbocharger with vertical or horizontal elbow, optimized for marine applications. Marine grade air cleaner with air inlet restriction indicator. Low temperature aftercooler available for increased efficiency. Cast iron water cooled exhaust manifold

Lubrication System – Marine grade steel or cast aluminum lube oil pan (72 L [19 gal]). Cummins spin-on oil filters available handed for simplified service

Electronics – 24 volt standard electrical system with 12 volt options available 

Certifications – Complies with IMO Tier II emissions regulations. Certificates of compliance are available from the U.S. EPA and Lloyd’s Register of Shipping. Consult your local Cummins professional for a complete listing of current marine agency approvals for this engine

Optional Equipment

• Direct mounted front power take-off
• Duplex lube and fuel filtration
• Engine room and pilot house instrumentation with analog gauges
• SAE A and B accessory drives
• Integral marine gear oil cooler
• C Command PT panels
• CENTINEL™ oil management system