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The Cummins 4B3.9-G1 is a 4-cylinder, 3.9-liter naturally aspirated diesel generator engine, often configured for 24kW–30kVA prime power at 50Hz (1500 RPM). Known for reliability, it features a rugged, 4-cycle design. Silent type/enclosed variants are often used for residential or light industrial standby, offering sound attenuation and a 40% reduction in parts compared to similar engines.
Key Specifications for Cummins 4B3.9-G1 Generator Sets:
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Web results
Generators | 4B3.9 | Cummins Inc.
Cummins
https://www.cummins.com › en-na › generators › products
Cummins
https://www.cummins.com › en-na › generators › products
Cummins® heavy-duty engine - Rugged 4-cycle, industrial diesel delivers reliable power, low emissions and fast response to load changes.Read more
Missing: quiet G1
Cummins quiet diesel generator 4B3.9-G1
fujian depco power generation co.,ltd
https://www.depcogenerator.com › cummins-quiet-diesel...
fujian depco power generation co.,ltd
https://www.depcogenerator.com › cummins-quiet-diesel...
Cummins 4B3.9-G1 Diesel Generator is a generator set known for its reliability, efficiency and durability. Hot Tags : Cummins 30kVA Diesel Generator Cummins ...Read more
4B3.9-G1 G-Drive Engine | Dongfeng Engine-DCEC
DCEC Cummins
https://www.dcec-engine.com › 4BT3.9 G-Drive
DCEC Cummins
https://www.dcec-engine.com › 4BT3.9 G-Drive
DCEC 4B3.9-G1 generator drive engine is a 4-cylinders in line,3.9 liter four-strokes engine with 102 mm bore and 120 mm stroke.Read more
Engines | 4B3.9 | Cummins Inc.
Cummins
https://www.cummins.com › en-na › engines › products
Cummins
https://www.cummins.com › en-na › engines › products
The 4B3.9 is a 4-cylinder in-line/rotary fuel system design that has the power you need and the reliability you demand. Like all B Series engines, ...Read more
Diesel generator set 4B3.9 series engine
سبا دیزل البرز
https://generatordiesel.ir › 2021/09 › 4b3.9g1.pdf
سبا دیزل البرز
https://generatordiesel.ir › 2021/09 › 4b3.9g1.pdf
PDF
Cummins® heavy-duty engine - Rugged 4-cycle, industrial diesel delivers reliable power, low emissions and fast response to load changes. Alternator - Several ...Read more
4 pages
Cummins Diesel Generators Model #4B3.9-G1
Americas Generators
https://americasgenerators.com › Blog
Americas Generators
https://americasgenerators.com › Blog
Mar 20, 2017 — This type of generator can start providing electrical load in less than 10 seconds of a power interruption. Cummins diesel generator sets have ...Read more
4B3.9-G1 Super Silent Cummins Diesel Generators for Three ...
powergeneratingsets.com
https://www.powergeneratingsets.com › sale-10752826-4...
powergeneratingsets.com
https://www.powergeneratingsets.com › sale-10752826-4...
High quality 4B3.9-G1 Super Silent Cummins Diesel Generators for Three Phase ... High Performance Cummins Engine 20KW 25KVA Silent Diesel Generator Low Noise.Read more
People also ask
How much horsepower does a 3.9 4BT Cummins have?
105 horsepower
4BT. The 4BT is one of two turbocharged variants of the 3.9L B-Series engine. It has two valves per cylinder for a total of eight. The most common output of this variant is 105 horsepower.
Cummins B Series engine - Wikipedia
Wikipedia
https://en.wikipedia.org › wiki › Cummins_B_Series_eng...
Wikipedia
https://en.wikipedia.org › wiki › Cummins_B_Series_eng...
Are Chinese Cummins any good?
Yes, Chinese-made Cummins engines uphold the brand's reputation for quality, reliability, and efficiency. Whether sourced from DCEC or CCEC, these engines meet the same performance and durability standards as Cummins engines manufactured elsewhere.Apr 1, 2025
Is Chinese-Made Cummins Quality Good? A Comprehensive Analysis
Diesel Generator Manufacturer from China
https://www.chinadieselgen.com › chinese-made-cummin...
Diesel Generator Manufacturer from China
https://www.chinadieselgen.com › chinese-made-cummin...
Which is better, Generac or Cummins?
Are Generac generators suitable for commercial use? Generac does offer generators for light commercial applications, but Cummins is generally the better option for heavy-duty commercial and industrial environments due to its higher power output and durability.
Top Generator Brands: Why Generac & Cummins Lead | Northside Power
Northside Power
https://northsidepower.com › top-generator-brands-why-...
Northside Power
https://northsidepower.com › top-generator-brands-why-...
How many hours will a 4BT last?
For starters, it's extremely durable. Even in brutal conditions—with excessive, 'round-the-clock workloads—the 4BT turns out hour after hour of reliable operation. In skid steer applications alone, the 4BT is known to last 8,000 hours or more between rebuilds.Jan 9, 2026
Cummins 4BT Production History and Specs - Big Bear Engine Company
Big Bear Engine Company
https://4btengines.com › cummins-4bt-production-histor...
Big Bear Engine Company
https://4btengines.com › cummins-4bt-production-histor...
Web results
Cumminss 20kw Diesel Generator 4b3.9-G1 Silent Type
Made-in-China.com
https://shiyanhuangyi.en.made-in-china.com › product
Made-in-China.com
https://shiyanhuangyi.en.made-in-china.com › product
Brand, dongfeng cummins ; Engine Model: 4B3.9-G1 ; Cylinder NO. 4 Cylinders in-line ; Prime Power(kw/HP):, 24kw/32HP ; Standby power(kw/HP):, 27kw/36HP.Read more
· Review by MIC_BUYER
Cummins 4B3.9-G/6B5.9-G Series | Cummins Generator
coopalpower.com
https://www.coopalpower.com › engine › cummins-4b3...
coopalpower.com
https://www.coopalpower.com › engine › cummins-4b3...
4B3.9-G Cummins heavy-duty engine. Rugged 4-cycle, industrial diesel delivers reliable power, low emissions and fast response to load changes.Read more
CD40-H1-4BT3.9G1.pdf
FDK Energy
https://fdkenergy.com › uploads › 2021/08
FDK Energy
https://fdkenergy.com › uploads › 2021/08
PDF
DIESEL GENERATOR 31KW. MODEL#FDK-CD40/H1. 50HZ/1500RPM. CUMMINS MODEL: 4BT3.9G1 ... FDK silent generator is designed by professional acoustic engineers based on ...Read more
7 pages