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Factory Direct Sale Diesel Engine Assy 80-130 Hp Cummins B3.9 4bt 4bta

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Cummin engine models available: LSF 2.8, 6C, NT855, QSB6.7, QSC, QSL, QSM11, QSX15, B3.9, etc.
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  • B3.9

  • Cummins


The Cummins B3.9 engine is a compact and versatile diesel engine. It has a displacement of 3.9 liters, with four cylinders and a bore/stroke ratio of 102mm/120mm.

The B3.9 features advanced fuel injection technology to deliver precise amounts of fuel for optimal performance and reduced emissions. Depending on the specific model, the engine can produce between 80 horsepower to 130 horsepower with torque ranging from 310 Nm to 400 Nm.

In addition to its impressive power output, the B3.9 also boasts excellent reliability and durability due to its robust construction and advanced engineering. With proper maintenance, this engine can provide reliable service in a wide range of applications including light-duty trucks, buses & coaches as well as generators.

Furthermore, this diesel engine offers superior fuel economy combined with low noise levels making it an ideal choice for customers who value both power and efficiency.

Overall the Cummins B3.9 is an efficient yet powerful diesel engine that delivers exceptional performance while maintaining high reliability standards which makes it suitable for use in various applications where both power density as well as efficiency are equally important considerations especially in light-duty commercial vehicles or equipment requiring reliable operation under demanding conditions at lower operating costs.


Engine Type
In-line, 4 Cylinders
Number of Cylinders
4 Cylinders
3.9 L (239.0
Bore and Stroke
4.02 in. x 4.72 in
Compression Ratio
Oil System Capacity
9.0 L (10.0 U.S.qt.)
Coolant Capacity
Coolant Capacity
30.6 in. (778 mm)
25.0 in. (634 mm)
35.9 in. (912 mm)
782 lbs. (355 kg)

Engine Model
Rated Power
Peak Torque
75 / 2200
201 / 1200
80 / 2500
201 / 1200
B3.9- 90
90 / 2500
254 / 1500
B3.9- 95
95 / 2200
283 / 1500
100 / 2200
298 / 1500
110 / 2200
377 / 1300
110 / 2500
275 / 1500
116 / 2500
300 / 1500
125 / 2200
350 / 1500
130 / 2500
344 / 1500


Q: What brand do you mainly focus on?

A: we mainly foucs on Cummins, Deutz, Volvo engine and engine parts. Contact us for our latest catalog.
Q: Could you accept sample order?
A: yes, we could accept sample order, we have confidence on our products quality
Q: Could you accept customization?
A: Accept OEM and ODM. We offer power solution with engine assy for many construction machinery factories, generator sets factories, ships factories, and other companies.
Q: How about the preparation time?
A: Within 2 business days for items in stock; 10-30 days for items out of stock
Q: What packing can you provide?
A: Neutral carton, wooden case and pallet
Q: What about your products' quality?
A: Products quality is most important to us, our factory alwalys supply good and stable quality products. Our products have 6-12 months guarantee period, any quality problem during this period, we will send free engine parts to you
Q: How do i pay for?
A: Alibaba Trade Assurance is our first option, also accept T/T, L/C, Western Union

KELUO is a company of machinery, engines, used equipment and spare parts founded by Hanhan in combination with HANJIU, Elephant in the industry.
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