Cummins INDUSTRIAL ENGINES
In ProductionCummins QSB4.5
QSB4.5 Series
Cummins QSB4.5 is a 4.46 L inline-4 turbocharged and aftercooled diesel engine. EPA annual certification data lists QSB5-G7, QSB5-G8 and QSB5-G9 generator configurations from 83 to 129 kWm at 1800 RPM under Interim Tier 4. The broader commercial platform also includes Tier 3 and Tier 4 Final configurations up to 155 kWm.
Cylinders / Config
L4
Displacement
4.46 L
Mechanical & Electrical Specifications
| Brand | Cummins |
| Model | QSB4.5 |
| Series | QSB4.5 Series |
| Configuration | L4 |
| Cylinders | 4 |
| Displacement | 4.46 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 3 / U.S. EPA Interim Tier 4 / U.S. EPA Final Tier 4 |
| Certifications | U.S. EPA Tier 3, U.S. EPA Interim Tier 4, U.S. EPA Tier 4 Final |
| Country of Origin | United States |
Frequently Asked Questions
What fuel does the Cummins QSB4.5 use?
The Cummins QSB4.5 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the QSB4.5?
The Cummins QSB4.5 is an inline-4 (4-cylinder) engine with a displacement of 4.46 L.
What emissions standard does the QSB4.5 meet?
The Cummins QSB4.5 is certified to U.S. EPA Tier 3 / U.S. EPA Interim Tier 4 / U.S. EPA Final Tier 4 emissions standards.
Is the Cummins QSB4.5 still in production?
Yes — the Cummins QSB4.5 is a current production model.
Is a datasheet available for the QSB4.5?
Yes — an official Cummins datasheet for the Cummins QSB4.5 can be downloaded from this page.