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Cummins 6BT (5.9) Engines and Longblocks

Cummins 6BT Engines For Sale

Big Bear Engine Company Warranty SealThe Cummins 6BT Engine or more commonly known as the Cummins 5.9 Engine is one of the most popular light to medium duty truck engines ever made. The engine was first manufactured in 1988 and was launched with the 1989 Dodge Ram. Chrysler introduced the Ram in 1981 but faced stiff competition from GM and Ford. Their original Chrysler LA and later Magnum engines weren’t cutting it. They needed a heavy duty engine that could compete.

After looking at John Deere and Detroit Diesel to partner up with the company finally signed the deal of a lifetime with Cummins. The Dodge Ram ended up being one of the most successful Trucks of all time and was due largely in the performance and reliability of the Cummins 5.9, 6BT. The Cummins 5.9 / Cummins 6BT was the highest producing 6 liter engine all time and still manufactured in 6 different countries today. The simple mechanical 12 valve design has made the 6BT / 5.9 the most reliable diesel engine ever produced.

Cummins 5.9 Horsepower History ChartThe Cummins 6BT Engine (5.9 L) is used both in light duty trucks as well as numerous industrial applications. Popular industrial applications include Step Vans, Delivery Trucks, School Busses, Small Dump Trucks, Generators, Motor Homes, Utility Trucks, Backhoes, Loaders, Dozers, Motor Graders, Forklifts, Man Lifts, Water Pumps, Irrigation Pumps, Drainage Pumps and Marine Applications.

Cummins 6BT Longblock Engines:

Cummins 6BT Surplus EngineOur 6BT longblock engines are an excellent choice for someone who has an existing Cummins 5.9 / Cummins 6BT engine that is in need of an overhaul but can’t be repaired. Usually, if the engine threw a rod through the block, piston damaged the head, dropped a valve or spun a bearing it is more cost effective to replace the engine.

The good news is that the ancillary parts of the engine such as the water pump, oil pump, turbo, injectors, gaskets, flywheel, flywheel housing, starter, fuel lines, oil cooler, aftercooler, oil filter, oil filter adapter, intake and exhaust manifolds, clutch and all of your brackets and pulleys can be easily swapped over to complete your longblock engine. It is more cost effective to use perfectly good parts and replace the internal parts of the engine. The longblocks are completely brand new, not used or remanufactured, and have never been run. They are built with ISO 9001 new parts and are built to exact OEM tolerances and clearances.

Our Longblock 6BT Engine Include:

• New Block
• New Cylinder Head
• New Camshaft and Lifters
AERA Association Member• New Crankshaft
• New Connecting Rods
• New Rocker Assemblies
• New Gaskets, Liners, Rings, Seals, Bearings

Longblock Models Include:

• 6B
• 6B Marine
• 6B Marine (Nippondenso Alternator)
• 6C - 2 Thermostat
• 6C - 1 Thermostat
• ISB 6.7 L

Cummins 6BT Complete Engines:

Our complete 6BT engines are also known as extended longblocks and come with most everything you need to drop in your application and go! Like our longblocks our Cummins 6BT / 5.9 L engines are built with all new ISO 9001 parts, to exact Cummins OEM specs and have a less than 1% failure rate on new parts. Our complete Cummins 6BT Engines come with:

• 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
• New Oil Pump and Water Pump
• New Oil Cooler
• New Oil Filters
• New Intake and Exhaust Manifolds

6BT Complete Engine Models:

• 6B - 155 HP
• 6B - 160 HP
• 6B - 180 HP
• 6B - 210 HP

• 6C - 215 HP

• 6C - 240 HP - 2 Thermostat
• 6C - 240 HP - 1 Thermostat

• 6C - 260 HP - 2 Thermostat
• 6C - 260 HP - 1 Thermostat

• 6C - 300 HP - 2 Thermostat
• 6C - 300 HP - 1 Thermostat

Cummins 6BT Spec

Engine Data

Type Inline, six cylinder turbocharger diesel (12 Valve or 24 Valve)
Displacement 359 cu in
Bore 4.02 in
Stroke 4.72 in
Compression Ratio 17.5:1
Max Horsepower 215 HP @ 2500 RPM
Max Torque Ratio 440 lb-ft @ 1600 RPM
Valve Train OHV, In Cylinder Block Lifter Camshaft (2 or 4 Valves Per Cylinder)
Cylinders 6 Inline
Cylinder Head Material Cast Iron
Engine Block Material Cast Iron
Camshaft Drive Gear Driven
Crankshaft Forged Steel (7 Main Bearings
Fuel System Bosch Injectors
Fuel Injection High Pressure Direct Injection
Emission Abatement None
Turbo Holset
Oil System Wet Sump
Oil System Capacity Cell
Cooling System 3 Gallons
Cooling System Water-Cooled
Control System Mechanical
Dry Weight 1,100 lbs (12 Valve), 1,150 lbs (24 Valve)


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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6BT Engine and Parts
6BT Extended Long Block
6CT 260HP
6CT 300HP
Cummins 6BT Complete Engine
Cummins 6CT 240HP

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