CUMMINS ENGINE GUIDE
Main Cummins Engine Models Summary
A simple overview of the main Cummins engine series, including model differences, displacement range, typical applications, and quick identification points.
This table helps buyers quickly understand the differences between common Cummins engine families. It is especially useful for engine parts inquiries, model comparison, and application-based selection.
Cummins Main Engine Models Summary Table
Series differences, displacement range, typical applications, and quick identification points.
| Category | Main Models | Displacement / Platform | Typical Applications | Quick Difference |
|---|---|---|---|---|
| Small and Light-Duty Platform | 2.8L / 3.3L / 3.8L | Light commercial vehicles, agricultural machinery, compact industrial equipment | ISF is more road-focused, while B3.3 and QSB3.3 are more common in compact industrial and off-highway use. | |
| Mechanical B Series | 3.9L 4-cylinder / 5.9L 6-cylinder | Construction machinery, generators, pumps, industrial equipment | 4BT is smaller and more compact, while 6BT offers higher output. 4BT3.9 and 6BT5.9 are fuller naming versions. | |
| Electronic Mid-Range QSB Series | 4.5L / 6.7L | Construction equipment, agricultural machinery, oil and gas equipment, off-highway applications | More modern than older B Series platforms, with stronger emphasis on electronic control and emissions upgrades. | |
| Medium to Heavy-Duty C and L Series | 8.3L / 8.3L / 8.9L | Medium-duty trucks, buses, generators, construction equipment, industrial power | 6CT and ISC are in the 8.3L class, while QSL9 and L375 belong to the larger 8.9L class. | |
| Heavy-Duty M N X and G Series | 10.8L to 15L class | Heavy-duty trucks, industrial power, marine, long-hour heavy-load equipment | M11, ISM11, and QSM11 belong to the 11-liter class. NH220 is an older platform, while NH855, NT855, and N14 belong to the 855 family. ISX15 and QSX15 are 15-liter class heavy-duty platforms. | |
| High-Horsepower K and QSK Series | 19L / 23L / 38L / 50L / 60L / 77.6L class | Mining equipment, oil and gas, large generators, marine, high-horsepower industrial systems | KTA19 and QSK19 are in the 19-liter class, while QSK45, QSK50, QSK60, and QSK78 belong to larger high-power platforms. |
Note: This summary table is designed for quick comparison and model grouping.
Tip: For parts matching, it is still better to confirm by engine model, serial number, and part number before ordering.