CUMMINS 3.9 L Engine
The CUMMINS 3.9 L engine is a water-cooled, four-stroke diesel engine. With a displacement of 3.9 liters, it delivers a power output ranging from 22 to 97 kW, making it versatile for various industrial, construction, and power generation applications.
| No. of Cylinders | 4 |
| Configuration | In Line |
| Displacement | 3.9 L |
| Bore | 102mm |
| Stroke | 120mm |
Engine Models
The CUMMINS B3.9 series engine includes multiple variants such as the 4B3.9 (naturally aspirated), 4BT3.9 (turbocharged), and 4BTA3.9 (turbocharged with intercooling). Known for its compact size and widespread parts availability, this engine is highly popular in a variety of custom applications.
The CUMMINS QSB3.9 engine features an advanced design and high-quality manufacturing, including an integrated cylinder block and cylinder head for enhanced durability. Equipped with high-pressure common rail (HPCR) fuel injection technology, it delivers superior fuel efficiency and improve power output and responsiveness.
For Construction
The CUMMINS 3.9 L engine is widely utilized across various off-highway and industrial sectors, including construction equipment, agricultural machinery, and industrial applications. It serves as a reliable power source for gensets, irrigation pumps, and related equipment, as well as specialized uses in airport operations such as baggage carts and tuggers. Additionally, this engine is commonly found in material handling equipment like forklifts and heavy-duty commercial wood chippers.
| Model | Rated Power(kw) | Rated Power(hp) | Rated Speed(rpm) | Emission Standard |
| 4BTA3.9-C | 60-97 | 81-132 | 2200-2500 | Euro II |
| QSB3.9-C | 60-97 | 81-132 | 2000-2500 | Euro IIIV |
For Marine
The CUMMINS 4BT series engine has been adapted for marine use, with various power configurations. These engines primarily serve in the Marine Power Generation sector, providing reliable and efficient power for onboard electrical systems and auxiliary equipment.
| Model | Rated Power(kw) | Rated Power(hp) | Rated Speed(rpm) |
| 4BTA3.9-GM47 | 47 | 64 | 1500 |
| 4BTA3.9-GM55 | 55 | 75 | 1500 |
| 4BTA3.9-GM65 | 65 | 88 | 1800 |
For Generators
The CUMMINS 3.9 L engine can also be used in portable and stationary generator sets, providing reliable power for industrial, commercial, and emergency backup applications.
| Model | Rated Power(kw) | Rated Power(hp) | Rated Speed(rpm) |
| QSB3.9-G | 63-88 | 85-119 | 1500 |
| 4B3.9-G | 22-36 | 31-49 | 1500-1800 |
| 4BT3.9-G | 40-44 | 55-60 | 1500-1800 |
| 4BTA3.9-G | 55-90 | 75-122 | 1500-1800 |
How to Order a CUMMINS 3.9 L Replacement Engine from ANTAIOS ?
- Step 1: Provide the engine serial number, rated power, and rated speed.
- Step 2: Submit photos of the engine from all four sides, along with a clear nameplate photo.
- Step 3: Share details about the equipment in which the engine is used.
Upon receiving the above information, we will promptly provide you with a quotation. Once the order is confirmed, production will begin immediately.
ANTAIOS guarantees that the CUMMINS 3.9 L replacement engine we produce will match over 90% of your original engine’s specifications, ensuring seamless installation and performance. After replacement, the engine will operate flawlessly.
You can contact our sales team via email, phone, or our website’s inquiry form for pricing and ordering.
The weight of a 4BT CUMMINS engine varies depending on the models and configuration, but most models weigh between 700 and 800 lbs.
The 4BT CUMMINS is a versatile diesel engine found in many industrial, commercial, and agricultural uses, including:
- Commercial Vehicles: Bread trucks, box trucks, delivery vans
- Construction & Farming Equipment: Skid steers, backhoes, tractors
- Marine Applications: Boats and small watercraft
