| Configuration | In-line 6-cylinder, 4-stroke diesel |
| Bore & Stroke | 102 mm x 120 mm (4.02 in x 4.72 in) |
| Displacement | 5.9 L (359 in3) |
| Aspiration | Turbocharged/Aftercooled |
| Rotation | Counterclockwise facing flywheel |
- Unmatched peformance driven through a perfectly matched turbocharger and a new 24-valve cylinder head that delivers industry-leading power density
- Quiet operation, including an 80-percent reduction in noise at idle, is one of the many benefits from the common-rail fuel system
- Enhanced sociability from the high-pressure common-rail design virtually eliminates smoke and improves the whole boating experience
- Peace of mind delivered by the Cummins Captain’s Briefing and global service network
Cabin Heater & Water Heater Connection Ports for QSB 6.7 & QSB 5.9
QSB 6.7 and QSB 6.7 Slimline Heater Supply Connection. Use coolant return elbow behind alternator for return connection. Read More
Identifying the Alternator & Serpentine Belt on the QSB 5.9
Which serpentine belt do I need on my Cummins Marine QSB 5.9 engine? Identifying the Alternator on the QSB 5.9 Read More
Cummins Marine QSB High Fuel Pressure Fault & Alarm Troubleshooting
Fault Code: 449, 553, 2311 (SPN: 157) Injector Metering Rail Number 1 Pressure – Data Valid But Above Normal Operating Range – Most Severe Level. The ECM has detected that fuel pressure in the rail... Read More
Cummins Marine QSB 5.9 Coolant Temperature Switch Locations
The coolant expansion tank on a Cummins QSB 5.9 will typically have (2) plugged 1/4″ NPT ports that are available to install a temp sender/switch. SMX Deluxe Temperature Alarm Switch Read More
