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Cummins X15 Offshore Towing Inboard Marine Diesel Engine
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Cummins X15 Offshore Towing Specs
| Manufacturer / Brand | Cummins Inc. |
| Model Designation | X15 Offshore Towing |
| Engine Type | 4-Stroke Heavy-Duty Commercial Marine Diesel |
| Cylinder Configuration | Inline-6 |
| Total Displacement | 14.9 Liters (912 cu in) |
| Bore x Stroke | 137 x 169 mm (5.39 x 6.65 in) |
| Aspiration & Charge Air | Turbocharged with Jacket Water Aftercooling (JWAC) |
| Cooling System Architecture | Keel-Cooled Closed Grid System with Expansion Tank |
| Continuous Power Rating (P1) | 500 BHP (373 kW) @ 1,800 RPM |
| Maximum / Intermittent Power (P3/P4) | 535 BHP (399 kW) @ 1,900 RPM (Intermittent Marine Rating) |
| Fuel Injection Platform | Cummins XPI Extreme High-Pressure Common Rail (HPCR) |
| Cylinder Head Metallurgy | Single-Piece 24-Valve Cast Iron with Integrated Camshaft |
| Cylinder Liners | Replaceable Wet Sleeve Cast Iron Liners |
| Flywheel Housing & Flywheel | SAE 1 Housing with SAE 14 Flywheel |
| Electrical System & Ground | 24V Isolated Ground Marine Electrical System |
| Starter & Alternator Output | 24V 7.5 kW Electric Starter / 24V 70A Marine Alternator |
| Lube Oil Sump Capacity | 45.4 Liters (12.0 US gal), High-Capacity Marine Wet Sump |
| Engine Coolant Capacity | 37.9 Liters (10.0 US gal) |
| Dry Weight (excl. gearbox) | 1,724 kg (3,800 lbs) |
| Overall Dimensions (L x W x H) | 1,712 x 1,075 x 1,257 mm (67.4 x 42.3 x 49.5 in) |
| Emissions Certification | EPA Marine Tier 3 / IMO Tier II |
| Fuel Compatibility | Ultra-Low Sulfur Diesel (ULSD No. 2), Marine Gas Oil (MGO DMA/DMB), B20 Biodiesel |
| Transmission / Outdrive Compatibility | Bare Engine Bobtail - Compatible with Twin Disc (MGX-5146A/RV) and ZF (ZF 550 / ZF 665) Deep-Reduction Transmission Packages |
| Factory Warranty Period | Cummins 2-Year or 6,000-Hour Continuous Commercial Warranty |
| Application Research | Offshore ocean-going tugs, offshore supply vessels (OSV), coastal anchor-handling tugs, and utility workboats operating continuous high-load towing cycles. |
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