original quality B3.9 engine 4B3.9 complete diesel engine for excavator

Product Specification

original quality B3.9 engine 4B3.9 complete diesel engine for excavator 

The Advantage and features of 4B3.9 engine:

The 4B3.9 diesel engine is a classic 3.9-liter inline four cylinder diesel engine from the B-series.

It has a durable design. It using Integrated cast iron cylinder body/head, forged steel crankshaft/camshaft, platform honing cylinder liner, impact resistant, wear-resistant, long overhaul cycle (common working conditions can reach 10000+hours). The number of parts is about 40% less than the same displacement model, with a minimalist structure, low failure rate, and easy maintenance.

The 4b3.9 engine using mechanical direct injection+optimized combustion chamber, about 15-20% more fuel-efficient than similar models

It has a simple structure, easy to maintenance, and low cost of use. 

Application of 4B3.9 engine: 

The 4B3.9 engine has a wide application field which includes: 

1. Construction Machinery (Core)
Excavators (5-8 ton class), loaders, bulldozers, rollers, graders, forklifts, aerial work vehicles
Concrete pump truck, mixer truck, crawler crane, drilling rig, small mining equipment

2. Generator set (standby/common)
50Hz (1500rpm): 24-80kW diesel generator set (backup/common power supply, data center, hospital, factory, base station)
60Hz (1800rpm): 23-75kW generator set

3. Industrial power equipment
Water pump unit (fire pump, irrigation pump, sewage pump), air compressor, compressor, hydraulic station, oilfield pumping unit, marine auxiliary equipment

4. Special vehicles
Light trucks, sanitation vehicles, obstacle clearing vehicles, small passenger cars

Specification of 4B3.9 complete diesel engine: 

Who We Are?

We are a professional supplier which is focus on diesel engine, engine parts, and construction machinery parts for various brands equipment.

We help customer to find a correct engine and spare parts with reliable quality and workable price. According to customer's needs, we can

supply both original and OEM copy quality products. All products are 100% tested before delivery.

As for the diesel engines, quality options are various, we can supply new engine, rebuilt/remanufactured engine, refurbished engine, etc. It

depends on customer's option.

For some of the big and expensive machinery spare parts, we also able to supply customer the original refurbished one or OEM copy quality.

How to get a quotation from us?

Please contact us and tell us what you need: 

If you need diesel engine, please tell us the engine model, it is better if you have old engine's nameplate or serial number, or the old engine's pictures from each side. If you don't have these information, please tell us the engine power requirement, the engine application, the torque requirement, etc, as detail as possible, we will try to help you select a suitable model. 

If you need engine parts or machinery parts, please tell us the engine brands/model or machinery brands/model with its part number. We will check according to it. Sometimes the machinery VIN code may also helps. 

Other engine models we supply:

4BT3.9, 6BT5.9, 6CT8.3, 6LTAA8.9, QSB3.9, QSB4.5, QSB5.9, QSB6.7, ISB6.7, QSC8.3, QSL8.9, QSZ13, QSM11, ISM11, NTA855, QSX15, ISX15, KTA19, QSK23, QST30, QSK38, QSK45, KTA50, QSK60, etc.