Cummins QSB6.7 250 HP Marine Diesel Engine
$8,575.00
In Stock
Used Cummins QSB6.7 250 HP Marine Diesel Engine Specs
| Brand | Cummins Marine |
| Full Model Code | QSB6.7-250 |
| Country of Origin | United States |
| Engine Family/Series | Cummins Quantum System B Series Evolution |
| Engine Type & Configuration | Inline 6-Cylinder, 4-Stroke, 24-Valve Cast Iron Inboard Diesel |
| Aspiration & Induction System | Turbocharged and Seawater Cooled Charge Air Cooler (Intercooled) |
| Displacement | 6.700 Liters / 6700 cc (408 cu in) |
| Bore x Stroke | 107.0 mm x 124.0 mm (4.21 in x 4.88 in) |
| Cylinder Count & Valves per Cylinder | 6-Cylinder, 4-Valves per Cylinder (24 Valves Total) |
| Compression Ratio | 17.3:1 |
| Rated Power / Horsepower | 250 HP (186 kW) @ 2600 RPM (Continuous / Heavy Duty Commercial) |
| Maximum Engine Speed / Rated RPM | 2600 RPM |
| Maximum Torque | 820 Nm @ 1500 RPM |
| Fuel System & Injection Type] | High-Pressure Common Rail (HPCR) Digital Injection Matrix, Direct Injection |
| Governor Type | Full Authority Electronic Control (CM850 ECM Engine Management System) |
| Electrical System Voltage & Alternator Output | 12V or 24V Isolated Ground Systems, Standard 80 Amp Marine Grade Alternator |
| Starting System | Heavy Duty Electric Starter Motor (Available in 12V or 24V configurations) |
| Cooling System Type | Freshwater Cooled Loop with Low-Profile Integrated Shell & Tube Heat Exchanger Core |
| Lubricating Oil Capacity / Oil Pan Capacity | 15.1 Liters (Deep aluminum marine oil pan profile) |
| Exhaust Diameter / Exhaust System Type | 125 mm / Waterjacketed Turbocharger Outlet with Water-Injected Wet Mixing Elbow |
| Flywheel & Flywheel Housing Size | SAE 3 Flywheel Housing Configuration |
| Dry Weight without Marine Gear | 658 kg (1450 lbs) |
| Dimensions L x W x H | 1266 mm x 851 mm x 857 mm (Engine standalone profile envelope) |
| Emission Certifications & Duty Rating | EPA Marine Tier 3 / IMO Tier II / Continuous / Heavy Commercial Duty Power Band |
| Application | Commercial tugboats, medium-duty push boats, displacement trawlers, passenger ferries, and heavy off-shore work vessels (Typical hull lengths 40-55 feet, driving heavy straight-shaft lines via hydraulic reduction gear arrangements). |
Cummins QSB6.7 250HP Included:
- 1x New QSB6.7 250HP Marine Propulsion Core
- 1x High Pressure Common Rail Fuel System
- 1x SmartCraft Marine Engine Monitoring Electronics System
- 1x Marine Grade Water Cooled Exhaust Manifold
- 1x Closed Circuit Corrosion Resistant Heat Exchanger
- 1x Integrated High Capacity Marine Oil Pan
- 1x Official Cummins Global Marine Limited Warranty
- 1x Technical Installation Workshop Manual Documentation
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