4.5 liter cummins | 121-173HP (90-129kW)
The Cummins QSB4.5 is a powerful 4-cylinder engine that meets Tier 4 Final emissions standards, offering 121–173 hp (90–129 kW) and 347–520 lb-ft (470–705 N•m) of torque. It features a VGT Turbocharger, HPCR fuel system, and a combined SCR and DOC after-treatment system for cleaner emissions and durability. The engine delivers high performance with a quick boost, compact design, and easy installation. Available worldwide, it is certified for Tier 4 Final, EPA Tier 4, and EU Stage IV.
Product Introduction
When your mining operations demand maximum uptime, compact design, and reliable performance, the Cummins QSB4.5 Mining Engine delivers. As an authorized Cummins distributor, JOZ supplies genuine Cummins QSB 4.5 engines, offering global customers not just the engine, but full technical support, installation guidance, and after-sales service backed by experienced engineering teams ready to travel worldwide.
Designed for the harshest mining conditions, the Cummins QSB 4.5 combines advanced engineering, emissions compliance, and compact durability to power your equipment efficiently, even in space-constrained designs. With horsepower ranging from 121 to 173 hp (90–129 kW) and torque up to 520 lb-ft (705 N•m), the QSB 4.5 rivals larger 6-cylinder engines in a smaller footprint—lowering your equipment weight without sacrificing performance.
JOZ ensures fast response for B2B procurement, offering inquiry submission, email quotations, or direct WhatsApp contact to simplify your sourcing process.
Full-Service Support by JOZ
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Transaction Information
Cummins QSB 4.5 Engine Model
| Engine model | power（kw/rpm) | Weight(kg) | Size(mm) | Maximum torque | |
| QSB（4cylinder/4.5L） | QSB4.5-C80 | 60/2200 | 381 | 1000×850×960 | 370/1400 |
| QSB4.5-C95 | 71/2200 | 381 | 1000×850×960 | 420/1500 | |
| QSB4.5-C100 | 74/2200 | 381 | 1000×850×960 | 430/1400 | |
| QSB4.5-C110 | 82/2200 | 381 | 1000×850×960 | 480/1500 | |
| QSB4.5-C125 | 92/2200 | 381 | 1000×850×960 | 537/1500 | |
| QSB4.5-C130 | 97/2200 | 381 | 1000×850×960 | 620/1500 | |
| QSB4.5-C150 | 112/2200 | 381 | 1000×850×960 | 560/1400 | |
| QSB4.5-C160 | 118/2200 | 381 | 1000×850×960 | 630/1500 |
Displacement: 4.5L
Cylinders: 4 inline
Certifications: Tier 4 Final, Stage IV, EPA Tier 4
Availability: North America, Latin America, Europe, Asia Pacific, Africa, Middle East
Key Features
Key Technical Advantages
| Feature | Advantage |
| Engine Displacement | 4.5L Inline 4-cylinder |
| Power Output | 121-173 hp (90-129 kW) |
| Max Torque | Up to 705 N•m |
| Turbocharger | Cummins VGT (Variable Geometry Turbocharger) |
| Fuel System | High Pressure Common Rail (HPCR) |
| Aftertreatment | DOC + SCR with passive oxidation |
| Certifications | Tier 4 Final / Stage IV / EPA Tier 4 |
| Installation | Mid & High Mount Turbo Flexibility |
| Cooling | Optimized for high-dust, high-temp mining sites |
| Lubrication | Extended drain intervals, high-durability components |
| Electrical | Advanced ECM shared with QSB6.7 for diagnostic simplicity |
Typical Applications
- Underground Loaders (LHD)
- Mining Haul Trucks
- Drill Rigs
- Wheel Loaders
- Material Handlers
- Crushing & Screening Plants
- Support Vehicles (Service Trucks, Utility Vehicles)
- Underground Conveyor Equipment
Why Choose QSB4.5 for Mining Operations?
At JOZ, as an authorized Cummins distributor, we don’t just sell engines — we deliver full lifecycle solutions. Our Cummins QSB4.5 Mining Engine offering includes:
Whether you’re replacing aging equipment or integrating into new mining vehicles, the QSB4.5 offers reliable power with simplified integration — and JOZ makes sure your equipment stays running.
Technical Systems Breakdown
Certifications： Tier 4 Final / Stage IV / EPA Tier 4 / EU Stage IV， ISO 9001 Certified Manufacturing
Fuel System
- High Pressure Common Rail (HPCR) system for precise fuel delivery.
- Improved combustion efficiency and lower fuel consumption.
Air System
- Cummins VGT Turbocharger for variable airflow control.
- Rapid power response and improved torque curve.
Cooling System
- Heavy-duty cooling package suitable for high ambient mining conditions.
- Enhanced heat dissipation for long duty cycles.
Lubrication System
- Full-flow filtration with extended drain intervals.
- Reduced wear and increased engine life.
Electrical System
- Advanced ECM with full diagnostics and engine protection features.
- Integrated electronic throttle and sensor suite.
Exhaust & Aftertreatment
- DOC + SCR combination ensures low particulate emissions.
- Efficient DEF usage and longer aftertreatment durability.
