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Cummins 4BT Engines and Longblocks

Cummins 4BT Engines For Sale

Big Bear Engine Company Warranty SealExperience the power of diesel! Our Cummins 4BT Engines are the best in the business. Whether you are looking to power small industrial equipment or are looking to upgrade to diesel through a 4BT Jeep Swap we will get you up and running. The Cummins 4BT Engine is a workhorse in its own right offering torque when you need it and the durability to run at full load for long periods of time.

We offer two types of new Cummins 4BT Engines: Longblocks and Complete Engines.

4BT Long Blocks Engines:

Cummins 4BT Surplus EngineOur long blocks are perfect for someone who already has an older Cummins 4BT and is looking to simply replace the worn hard internal parts of the engine and then reuse ancillary parts. Note we also offer a Cummins 4.5 L ISB long block (rear gear train and front gear train). Our traditional long-block 4B (105 hp) engine includes:

• New Block
• New Cylinder Head
• New Camshaft and Lifters
• New Crankshaft
• New Connecting Rods
• New Rocker Assemblies
• New Gaskets, Liners, Rings, Seals, Bearings
*Note long blocks may or may not come with front cover, gear housing, rockers, valve cover or oil pan depending on availability

4BT Complete Engines:

Our complete engines (extended long block packages) come with most everything you need to drop into your applications. These brand new Cummins 4BT Engines are built with brand new ISO 9001 parts, to exact OEM tolerances and have less than a 1% parts failure rate. These are "fan to flywheel" complete drop-in units that have been dyno tested prior to shipment. We do not sell adapter plates, torque converters, transmissions/PTOs, axles, suspensions, differentials or motor mounts. Engines ship without starter, alternator, flywheel, flywheel housing but are available for additional purchase. Our complete engines include:

• New Block
• New Cylinder Head
• New Camshaft and Lifters
• New Crankshaft
• New Connecting Rods
• New Rocker Assemblies
• New Gaskets, Liners, Rings, Seals, Wrist Pins, Bearings
• New Bosch Injectors
AERA Association Member• New Oil Pump and Water Pump
• New Oil Cooler
• New Oil Filters
• New Intake and Exhaust Manifolds
• New Housings (Front and Rear)
• New Brackets and Pullys
• New Fuel Injector Pump
• New Starter (Complete Engines Only)
• New Alternator (Complete Engines Only)
• New Flywheel (Complete Engines Only)
• New Flywheel Housing (SAE #2 or #3 - Complete Engines Only)
• New Turbo
• New Oil Pan

4BT Complete Engine Models:

• 4BT 105 HP - (Inline A Pump)
• 4BTA 130 HP - (Inline A Pump)
• 4BTAA 140 HP - (Rotary or P-7100 Fuel Pumps)

Cummins 4BT Engine Industrial Applications:

Cummins 4BT Engines are primarily used in industrial applications. The engine was primarily installed in step vans and “bread trucks” for hauling cargo around cities. 4BT engines are also very popular in skid steers, loaders, dozers, forklifts, manlifts, wood chippers, RVs, shuttle vans, pumps, generators, street sweepers and baggage carts. Some Cummins 4BT engines are also in use in small boats and bilge pumps but mainly use in over the road vehicles.

Cummins 4BT Engine Off-Roading Applications:

Cummins 4BT New Engines The off-roading community has taken quite a liking to the Cummins 4BT engine; known primarily as 4BT Jeep Swaps. The engine won’t win any races as the maximum horsepower is only 105 hp at 2,300 rpm however the engine is extremely popular when it comes to the torque ratio. The standard 4BT will produce 265 lb-ft of torque at 1,600 rpm however common upgrades can increase the torque ratio to well over 750 lb-ft of torque. That is a lot of torque at the wheels; perfect for traversing steep inclines or hugging the edge of a trail. There is a whole community over at 4BTSwaps.com that focuses on all the info you will ever need to swap a diesel engine into a off-road vehicle.

Cummins 4BT engines are also easy to maintain, simple in design and can get upwards of 30-40 mpg with performance upgrades. The 4BT is the most popular diesel engine swap for off-roading because it is simple to upgrade the turbo, camshaft, injectors and fuel pumps in addition to being the biggest diesel engine that will easily fit into a Jeep or 4Runner. A Cummins 6BT will simply be too large.

Note, Crate engine packages are sold as extended long block replacement units for use in existing industrial and automotive applications. Intended use of the extended long block package is meant to replace worn or defective existing internal gear train engine components. Bellhousing, fuel systems and electrical parts are included in the engine package and are intended for individual one off parts replacement of existing worn engine components from the customer’s existing engine.

If extended long block packages are swapped into an off road utility vehicle or marine application it is up to the customer to check for local, state and federal regulations in reference to emissions compliance and legal permitting. Big Bear Engine Company is not responsible for any non intended use of extended long block packages. Each state and even local counties have widely different regulations (Classic Cars, Rat Rods, Rock Crawling Vehicles etc...) so it is always best to do your homework beforehand.

Cummins 4BT Specs

Cummins 4BT Spec

Engine Data

Configuration Inline 4 Cylinder
Displacement 3.9 L, 239 cubic inches
Bore x Stroke 4.02" x 4.72"
Cylinder Head Cast Iron
Engine Block Cast Iron
Firing Order 1-3-4-2
Compression Ratio 17.5 : 1
Injection Direct Injection, Mechanical Injection Pump
Aspiration Turbocharged, non-intercooled
Valve Train OHV, 2 valves per cylinder
Weight 745-782 lbs with oil
Oil Capacity 10 quarts
Governor Speed Varies with application
Horsepower 105 hp @ 2300 rpm
Torque 265 lb-ft @ 1600 rpm
Give us a call today at 844-340-4114 for immediate sales and support for the Cummins 4BT, Cummins 6BT or CAT 3306. If you have any questions check out our FAQ Page. We are always ready to help or just listen to your crazy off-roading adventures!

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140 HP 4BT Engine Unit Arrival 1
140 HP 4BT Engine Unit Arrival 2
140 HP 4BT Engine Unit Arrival 3
4BT 105 2
4BT 105 3
4BT 105 4
4BT 105 5
4BT Crate 2
4BT Crate 4
4BT Engines
4BT Extended Longblock (Bosch Injectors)
4BT Jeep Swap Engines
4BTAA Extended Long Block (Rotary)
Chad Crate 7
Cummins 4BT 105 HP BBEC
Cummins 4BT 130 HP BBEC
Cummins 4BT 140 HP BBEC
Cummins 4BT Black Engine
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Cummins 4BT Dozer Engine
Cummins 4BT Engine Big Bear 1
Cummins 4BT Engine Big Bear 2
Cummins 4BT Engine Big Bear 3
Cummins 4BT Engine Big Bear 4
Cummins 4BT Engine Big Bear 5
Cummins 4BT Engine Big Bear 6
Cummins 4BT Engines
Cummins 4BT Industrial Picture
Cummins 4BT Marine White
Cummins 4BT Pic Red
Cummins 4BT Skid Steer Engine
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Cummins 4BTs Production

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