cummins

Cummins 4BT3.9 Engine

Cummins 4BT3.9 Engine is a small horsepower engine which the power ranges from 80HP to 140HP. In mini equipment industry, Cummins 4BT3.9 Engines are used in Construction Machinery, Automotive Equipment, Generator Power Unit Marine Industry.  The  engine was designed without cylinder liner, intake/exhaust valve insert, valve guide, cam shaft bushing, so Cummins 4B3.9 engine has less parts when comparing with the other brand engines.  In order to meet different market / equipment needs, Cummins developed different engine models. While according to the type of aspiration,  these engines are separated as followings:

  • Cummins 4B3.9 (Nature Aspiration)
  • Cummins 4BT3.9 (Turbocharged)
  • Cummins 4BTA3.9 (Turbocharged, Charged Air Cooled)
  • Cummins 4BTAA3.9 (Turbocharged, Charged Air Cooled)

Combine with the technology from Cummins factory, we provide a few solutions for your machinery. Not only Cummins 4BT3.9 engine assy but also 4BT3.9 long block engine will be your smart choice. So that you will get your equipment into work in a very short breakdown time.

New Cummins 4BT3.9 Engine Assy

CO-MACH offer the New Cummins 4BT3.9 Engines and our new engines will be built with the following parts:

  • New Cylinder Head Assy with Valves mounted
  • New Cylinder Block
  • New Crankshaft
  • New Camshaft
  • New Pistons, New Piston Pins, New Piston Ring Sets
  • New Connecting Rods, Bearings
  • New Fuel Injectors
  • New Fuel Injection Pump
  • New Turbocharger
  • New Rocker Assemblies
  • New Lubricating Oil Pump and Water Pump
  • New L.O Cooler
  • New Fuel Filters, Water Filters, L.O Filters
  • New Intake and Exhaust Manifolds
  • New Gears, New Gear Housings
  • New Starting Motor, New Alternator
  • New Flywheel, New Flywheel Housing
  • New Oil Pan
  • New Brackets, New Pulleys

Cummins 4BT3.9 Long Block Engines

CO-MACH manufacture Cummins 4BT3.9 Long Block Engine which Contains the following parts:

  • New Cylinder Head Assy with Valves mounted
  • New Cylinder Block
  • New Crankshaft
  • New Camshaft
  • New Pistons, New Piston Pins, New Piston Ring Sets,
  • New Connecting Rod
  • New Bearings
  • New Lubricating Oil Pump and Water Pump
  • New L.O Cooler, New Oil Pan
  • New Rocker levers etc.

Long Blocks do not apply the outer fittings. In this case, CO-MACH long blocks don’t include the followings: Fuel pumps, Turbochargers, Turbo Drains, Fuel Lines, Injectors, Lift pumps, Air Compressors, Starters, Alternators, Flywheels, Flywheel Housings, Filters etc.

Cummins 4BT3.9 for Automobile

In automotive industry, Cummins 4BT3.9 engines are popular for Passenger Bus, Coach, School Bus, RV (Recreational Vehicle), Shuttle Bus Airport Airfield Bus, Airport Luggage Cart, People Mover etc. The Cummins 4BT3.9 engines are suit for Chinese Vehicles like YUTONG, KINGLONG, DONGFENG, JAC, HIGER … In general, Cummins 4BT3.9 automotive engine models are as below:

Engine Model Emission Standard Rated Power/Speed
(KW/rpm)
Peak Torque
(N.m/rpm)
Aspiration
4BTAA3.9-125
EQB125-20
Euro II [email protected] [email protected] Turbocharged,  Aftercooled
4BTAA3.9-140
EQB140-20
Euro II [email protected] [email protected] Turbocharged, Aftercooled

Cummins 4BT3.9 Engines for Industrial Machinery:

In industrial market, Cummins 4BT3.9 Engines are applied to the small horsepower equipment like: Excavator, Loader, Bulldozer, Skid Steer, Roller, Tractor, Cranes, Forklift, Boom lift, Scissor Lift, Street Sweeper, Compressor … In China, the 4BT3.9-C engines are supplied to DOOSAN Shanghai, LIUGONG, LIU-TECH Air Compressor, ZHENGTAI, SANY, DYNAPAC, XGMA … In general, Cummins 4BT3.9 Industrial engines are shown as below:

Engine Model Emission Standard Rated Power/Speed
(KW/rpm)
Peak Torque
(N.m/rpm)
Aspiration
4BTA3.9-C80-II Euro II [email protected] [email protected] Turbocharged, Aftercooled
4BTA3.9-C100-II Euro II [email protected] [email protected] Turbocharged, Aftercooled
4BTA3.9-C110-II Euro II [email protected] [email protected] Turbocharged, Aftercooled
4BTA3.9-C125-II Euro II [email protected] [email protected] Turbocharged, Aftercooled
4BTA3.9-C130-II Euro II [email protected] [email protected] Turbocharged, Aftercooled

Cummins 4BT3.9 Engines for Fire Emergency Pump Driven Engine

In emergency situation, the Fire Emergency pump should be given a reliable and durable power, So that the emergency situation can get efficiently controlled. Cummins 4BT3.9 Engines act as an important part of power source from fire emergency equipment. Generally, the Cummins 4BT3.9 Engine models for Fire Emergency pumps are shown as below:

Engine Model Rated Power/Speed
(KW/rpm)
Fuel Pump Aspiration
4BTA3.9-P80 [email protected] Mechanical Pump Turbocharged, Aftercooled
4BTA3.9-P90 [email protected] Mechanical Pump Turbocharged, Aftercooled
4BTA3.9-P100 [email protected] Mechanical Pump Turbocharged, Aftercooled
4BTA3.9-P110 [email protected] Mechanical Pump Turbocharged, Aftercooled

Cummins 4BT3.9 Engines for Marine Engine

Currently, in order to supply the power to the marine vessels, diesel engine is the first choice of the main engine, generator engine and emergency generator engine in marine industry.  The marine Tug boat as well as supply boat, Bunkering vessels, Ferries, Fishing boat  choose Cummins 4BT3.9 Engines as their power supply driven engine. Generally, Cummins 4BT3.9 Marine engines models are as followings:

Engine Model Rated Power/Speed
(KW/rpm)
Standby Power/Speed
(KW/rpm)
Aspiration
4BT3.9-GM47 [email protected] [email protected] Turbocharged, Aftercooled
4BT3.9-GM55 [email protected] [email protected] Turbocharged, Aftercooled
4BT3.9-GM65 [email protected] [email protected] Turbocharged, Aftercooled

Cummins 4B3.9 Engines for Generator Set

In fact, Cummins engines are known as their reliability and durability. Cummins 4BT3.9 engines make your continuous power unit or a standby power unit working smoothly. Generally, Cummins 4BT3.9 engines models for generator sets are as followings:

Engine Model Rated Power/Speed
(KW/rpm)
Standby Power/Speed
(KW/rpm)
Governor Type
4B3.9-G1 [email protected] N/A Mechanical Governor
4B3.9-G1 [email protected] N/A Mechanical Governor
4B3.9-G2 [email protected] [email protected] Electronic Governor
4B3.9-G2 [email protected] [email protected] Electronic Governor
4BT3.9-G1 [email protected] N/A Mechanical Governor
4BT3.9-G1 [email protected] N/A Mechanical Governor
4BT3.9-G1 [email protected] N/A Mechanical Governor
4BT3.9-G1 [email protected] N/A Mechanical Governor