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Cummins 4BT 105 HP Open Power Unit

Cummins 4BT 105 HP Open Power Unit


We offer a variety of Cummins Power Unit Packages with Murphy Panel, Air Cleaner, Skid Mounted which is perfect agricultural pumping equipment, drill rigs, dredge systems, or off site construction equipment. The Cummins 4BT (3.9L) Open Power Unit is a reliable engine first introduced back in the early 1980s and was a staple of industrial equipment for nearly 30 years.

Our 4BT Open Power Unit Packages are considered remanufactured component builds which are built with a combination of reman and new parts. Build tolerances are all miced and are in accordance with OEM Spec build tolerances. Power Units are thoroughly inspected and test run to ensure the quality of the components prior to shipping. In addition to the 4BT Power Units we also have higher horsepower 5.9 L (6BT) and 8.3 L (6CT) packages available.

Cummins 4BT Power Unit Package Includes:

  • Engine Block
  • Cylinder Head
  • Camshaft and Lifters
  • Crankshaft
  • Connecting Rods
  • Rockers
  • Gaskets, Rings, Seals, Wrist Pins, Bearings
  • Inline Fuel Pump
  • Radiator (fan, radiator, shroud, hoses, supports)
  • Air Cleaner Kit (hoses, clamps, rain cap)
  • Silencer Kit (Silencer, brackets, bellows, turnout, clamps)
  • Oil Pump, Lift Pump, and Water Pump
  • Oil Cooler
  • Oil Filters
  • Oil Pan and Pickup Tube
  • Intake and Exhaust Manifolds
  • Front and Rear Housings
  • Injectors
  • Fuel Transfer Pump
  • Holset HX40W Wastegate Turbo (High Mount Front Out)
  • 12V Starter and Alternator
  • Flywheel/Flywheel Housing (SAE#3 Flywheel Sunken face (for Lovejoy) or Flat face for automotive clutch)
  • Skid Mounted
  • Base Fuel Tank – 11 Gallons (Skid base, Radiator and plumbing mounts, Engine mnt brackets, Isolators, Throttle control, Fuel lines and pre-filter)
  • No Control Panel, Converter, or PTO Drive
  • No Core Charge
  • Run tested before shipment
  • Standard 12 Months Parts Replacement Warranty (Engine Only)
  • 1 or 2 Year Parts/Labor Extended Warranties Available

Common Applications: hydraulic pumps, irrigation systems, drill rigs, caissons, air compressors, dredge pumps, and mining sites. Can be used with Generator Applications but governor needs to be converted to fixed RPM which is not included.

NOTE: Note: Murphy® Instrument Panel with Shut Down Protection, Charge Air Coolers, and Leg Mounted Radiator Packages are available for purchase for Cummins engines.

Cummins 4BT (3.9 L) Open Power Unit Specs:

  • Displacement – 3.9 L (239 cu-in) Displacement
  • Cylinders – 4
  • Type- Mechanical, Electronic
  • Combustion – Direct Injected
  • Horsepower – 105 HP 2200 RPM
  • Max Torque – 243 ft-lbs @1400 RPM
  • Shipping Weight – 1400 lbs.
  • Dimensions – 48″ x 33″ x 46″
  • Compression Ratio: 17:5:1
  • Aspiration – Turbocharged
  • Firing Order 1-3-4-2
  • Oil Capacity – 10 quarts
SKU: BBENG53 Categories: ,
You’ve come to the right place for all of your heavy duty diesel engine needs. We here at Big Bear Engine Company are old school machine shop guys that know the value of your time whether it be out in the field for an industrial job or at play with an off-road engine swap. We are old school machine shop guys and guarantee the workmanship of all of our engines including our Cummins 4BT 105 HP Diesel Engines.

Availability: In Stock



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