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About the Cummins QSX
The Cummins QSX is a heavy-duty, 15‑litre inline‑6 diesel engine family built for demanding truck, industrial and marine applications. Known for robust low‑end torque, strong durability and flexible power outputs, the QSX combines proven mechanical design with modern fuel systems and emissions technology to deliver reliable performance in severe duty cycles.
- Trusted Seller
NEW CUMMINS DFEK STATIONARY GENERATOR SET
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 671 hp
- Power: 500 kW
The new Cummins DFEK stationary generator set offers a powerful diesel engine with a 500 kW standby output (455 kW prime). It is equipped with the QSX15-G9 engine, delivering 755 HP at 1800 RPM, and meets EPA Tie...
Waukesha, WI 
Cummins 450 kW Diesel Generator Set — QSX15-G9, 91 Hours, 2020
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 603 hp
- Power: 450 kW
49317040 Used Cummins 450 kW standby (410 kW prime) diesel generator set, model DFEJ, SN-E200767756. Cummins QSX15-G9 NR2 engine rated 755 HP at 1800 RPM, SN-80257492, EPA Tier 2 emissions. 3/60/277/480V, 12 lead...
Belvidere, IL
New Cummins 500 kW Diesel Generator Set – Model DFEK – 2025
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 671 hp
- Power: 500 kW
49317043 Unused New Cummins 500 kW standby (455 kW prime) diesel generator set, model DFEK, SN-A250405985. Cummins QSX15-G9 engine rated 755 HP at 1800 RPM, SN-80646852, EPA Tier 2 emissions. 3/60/277/480V, 12 le...
Belvidere, IL
2025 Cummins DFEK 500 kW Generator Set – UL2200 – 0 Hours – Sound Attenuated
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 671 hp
- Power: 500 kW
49317044 Unused New Cummins 500 kW standby (455 kW prime) diesel generator set, model DFEK, SN-B250418448. Cummins QSX15-G9 engine rated 755 HP at 1800 RPM, SN-80703730, EPA Tier 2 emissions. 3/60/277/480V, 12 le...
Belvidere, IL- Trusted Seller
2007 CUMMINS DFEJ STATIONARY DIESEL GENERATOR
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 603 hp
- Hours: 1,469 h
The 2007 Cummins DFEJ stationary diesel generator is a reliable power solution ideal for various applications, including aggregate and farming. This used model operates at a power output of 450 kW and is driven b...
- Trusted Seller
New Cummins DFEK QSX15-G9 Diesel Generator EPA Tier 2 *****ETA Nov 3, 2025***** $129,900 500 kW
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 671 hp
- Power: 500 kW
The new 2025 Cummins DFEK QSX15-G9 Diesel Generator offers reliable 500 kW standby power with a capacity of 455 kW at prime. Powered by a Cummins QSX15-G9 engine, it generates 755 horsepower at 1800 RPM while mee...
- Trusted Seller
2008 Cummins QSX15
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 671 hp
- Hours: 500 h
Pre-owned Cummins DFEK Generator Set - Powered by QSX15 Diesel Engine - Rated at 500KW, 625KVA, 60Hz, 480V, 1800RPM - Includes Engine Driven Radiator, PowerCommand Digital Control Panel, 800AMP Main Breaker, Jack...
Los Angeles, CA - Trusted Seller
2008 Cummins QSX15
- Manufacturer: Cummins
- Model: QSX
- Horsepower: 671 hp
- Hours: 500 h
Pre-owned Cummins DFEK Generator Set - Powered by QSX15 Diesel Engine - Rated at 500KW, 625KVA, 60Hz, 480V, 1800RPM - Includes Engine Driven Radiator, PowerCommand Digital Control Panel, 800AMP Main Breaker, Jack...
Los Angeles, CA - Trusted Seller
2009 500 kW Cummins QSX15-G9 Diesel Generator Package
- Manufacturer: Cummins
- Model: QSX
- Hours: 330 h
- Fuel type: diesel
Currently installed at behind the fence power facility near Camrose Alberta Canada, this 500kW Cummins back-up diesel generator set is no longer required as it's oversized for the plant, and will be replaced with...
Ferintosh, Canada