Qianzhuo Machinery
| Delivery Time | 7-15 days after deposit |
| Engine Family | B-Series (4BT Platform) |
| Dry Weight | approx. 340 kg |
| Supply Ability | 300 Sets per Month |
| Aspiration | Turbocharged |
| Cooling Method | Water Cooled |
| Payment Terms | T/T,L/C,Western Union |
| Rated Power (Genset) | 50 kW / 62.5 kVA |
| Fuel System | Direct Injection |
| Warranty | 12 Months |
| Engine Type | Inline 4-Cylinder, 4-Stroke |
| Engine Model | 4BT3.9 |
| Displacement | 3.9L |
| Bore x Stroke | 102 x 120 mm |
| Emission Standard | Euro II / Tier 2 Optional |
| Rated Speed | 1500 rpm (50Hz) / 1800 rpm (60Hz) |
| Governor | Mechanical / Electronic Optional |
| Packaging Details | QZ branded wooden case with anti-rust coating and shock-proof foam, suitable for sea freight |
| Starting Method | Electric Start 24V |
| Certification | ISO 9001:2015 |
| Brand Name | QZ |
| Model Number | 4BT3.9 |
| Place of Origin | China |
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Product Specification
| Delivery Time | 7-15 days after deposit | Engine Family | B-Series (4BT Platform) |
| Dry Weight | approx. 340 kg | Supply Ability | 300 Sets per Month |
| Aspiration | Turbocharged | Cooling Method | Water Cooled |
| Payment Terms | T/T,L/C,Western Union | Rated Power (Genset) | 50 kW / 62.5 kVA |
| Fuel System | Direct Injection | Warranty | 12 Months |
| Engine Type | Inline 4-Cylinder, 4-Stroke | Engine Model | 4BT3.9 |
| Displacement | 3.9L | Bore x Stroke | 102 x 120 mm |
| Emission Standard | Euro II / Tier 2 Optional | Rated Speed | 1500 rpm (50Hz) / 1800 rpm (60Hz) |
| Governor | Mechanical / Electronic Optional | Packaging Details | QZ branded wooden case with anti-rust coating and shock-proof foam, suitable for sea freight |
| Starting Method | Electric Start 24V | Certification | ISO 9001:2015 |
| Brand Name | QZ | Model Number | 4BT3.9 |
| Place of Origin | China | ||
| High Light | Cummins 4BT3.9 Diesel Engine ，4BT Engine Assembly ，50KW Generator Set Engine | ||
The 4BT3.9 is a 3.9-litre inline four-cylinder turbocharged diesel engine built as a dependable prime and standby power source for 50KW generator sets. Based on the proven B-series platform, it combines a rigid cast-iron structure with precise direct injection to deliver steady output, economical fuel use and straightforward servicing in the field.
| Engine Model | 4BT3.9 |
| Engine Type | Inline 4-cylinder, 4-stroke, water cooled |
| Displacement | 3.9 L |
| Aspiration | Turbocharged |
| Bore x Stroke | 102 x 120 mm |
| Rated Output (Genset) | 50 kW / 62.5 kVA |
| Rated Speed | 1500 rpm (50Hz) / 1800 rpm (60Hz) |
| Fuel System | Direct injection |
| Starting Method | Electric start, 24V |
| Dry Weight | approx. 340 kg |
Every engine is assembled and load-tested before shipment. We supply new, rebuilt and remanufactured options so you can match the budget of your project without giving up reliability. Engines are packed in wooden cases for safe sea transport and are backed by a 12-month warranty.
To receive a quotation, send us your engine model or the power rating you need, the intended application and the quantity. If you are matching a generator set, tell us the kVA and the running frequency so we can confirm the correct rating and flywheel housing.
Company Details
Business Type:
Distributor/Wholesaler,Exporter,Trading Company,Manufacturer
Ecer Certification：
Verified Supplier
Zhengzhou Qianzhuo Auto Parts Co., Ltd (Qianzhuo Machinery) is a professional company which focused on the business and service of diesel engine, engine parts and engineering & construction machinery parts, products are widely used on construction/engineering machinery, truck, bus, coach, m... Zhengzhou Qianzhuo Auto Parts Co., Ltd (Qianzhuo Machinery) is a professional company which focused on the business and service of diesel engine, engine parts and engineering & construction machinery parts, products are widely used on construction/engineering machinery, truck, bus, coach, m...
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