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Brand New Cummins
4BT and 6BT Engines

Used & Remanufactured
Diesel Engines

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Warranty

Industrial
Applications

Diesel Engine
Off-Roading Applications

Remanufactured Cummins 4BT, 6BT (5.9) and CAT 3306 Engines

Big Bear Engine Company Warranty SealWe have the unique ability and talent to remanufacture diesel engines in house at our facility in Denver, CO. For customers looking who looking a more cost effective option we offer remanufactured Cummins 4BT, 6BT and CAT 3306 Engines. There are two options when it comes to our remanufactured engine program: Exchange and Repair & Return.

Advantages of Remanufactured Diesel Engines

• Save on Average 57% Over the Dealer
• 88 Point Quality Control Procedure
• Built with All New Parts
• Built to OEM Spec
• ISO 9001 Parts – Less than 1% Failure Rate
• Industry Leading 1 Year Unlimited Miles Warranty
• Same PAERA Association Memberarts, Engine and Software as a Dealer Engine
• AERA Certified Engine Manufacture
• Built in House in Denver, CO USA
• Extremely Fair Core Acceptance
• 18 Machinists and Master Engine Builders

Exchange:

Exchange engines are remanufactured from all brand new ISO 9001 new parts from an engine core. All parts are machined to exact OEM tolerances and in essence the engine is returned to its original quality unnoticeable from the day it left the factory. Many times older engines are made better than new through remanufacturing as the market has made improvements in parts and technology.

Diesel Camshaft Grinding

Diesel Camshaft Remanufacturing

Upon completion of the new remanufactured engine you simply send us back your old core so we can keep an active inventory of cores for our next customer. Our core policy is very liberal; if the hard internal parts of the engine are salvageable (cylinder head, crankshaft, camshafts and lifters, rocker assemblies and block) then we will return your core deposit in full. If some components are beyond repair we will offer partial credit based upon the value of your core. Engines can also be purchased on an outright basis where the core charge is included into the sale.

Our 18 machinists and master engine builders have the ability to remanufacture the Cummins 4BT, Cummins 6BT and Caterpillar 3306 back to longblock status. Our longblocks come with complete cylinder head, camshaft and lifters, connecting rods, crankshaft, pistons, rings, liners, gaskets, front and intermediate covers. The engine also comes timed and ready to go. The fuel system (injectors, and fuel pumps), water and oil pumps as well as turbochargers can be ordered with the engine but will not be installed on the longblock. If you are looking for a drop in crate engine we also have a great article which tells you how to research a crate engine as well as how to properly swap a crate engine into any vehicle or industrial application.

Repair and Return:

Remanufactured Cummins 4BT Engine

Remanufactured Cummins 4BT Engine

Many customers don’t need a fully remanufactured engine but rather have a component or two that need repairing. We have the ability to fully remanufacture individual components back to OEM specifications and return them back to you. We can either do a complete repair and return on your engine, remanufacturer specific components such as the crankshaft or cylinder head or ship you the parts you need to repair non-critical components yourself.

In some instances when components cannot be remanufactured it will become the responsibility of the customer to replace them if they elect to do so. There is no core charge associated with Repair & Return engines and are purchased outright.

Remanufactured Engine Models Offered:

We here at Big Bear Engine Company specialize in medium duty diesel engines (4BT, 6BT, 3306) however if we have the capability to remanufacture just about any engine. These are the engines we can remanufacture:

Caterpillar: CAT 3116, CAT 3126, CAT 3208, CAT 3304, CAT 3306, CAT C7, CAT C12, CAT C13, CAT C15, CAT 3406, CAT 3408, CAT 3412

Cummins: Big Cam 855, N14, ISX, ISL, ISM, ISC, M11

Detroit Diesel: 60 Series, 14.0 L, DDEC III, DDEC IV, DDEC V

International: DT466, DT530

Mack: E6, E7, E7-Etech, E7-Aset, MP7

John Deere: 4045, 6068, 6101

*Note: We do not do gas engines or light duty diesel truck engines

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!

Request A Quote

REMANUFACTURED ENGINES GALLERY

CAT 3054 Engine
CAT 3054 Engines
CAT 3066 Engine
CAT 3116 Diesel Engine 1
CAT 3116 Remanufactured Engine 2
CAT 3126 Reman Engine
CAT 3196 Engine
CAT 3208 Marine Engine
CAT 3306 Connecting Rods
CAT 3306 Engine
CAT 3306 Firepump Application
CAT 3306 Longblock Engine
CAT C13 Cylinder Head in Process
CAT C15 Longblock Engine
CAT C15 Reman Engine
CAT C7 Reman Engines
CAT C7 Remanufactured Engine 3
Case 4.0 L Diesel Engine
Caterpillar 3306 Block
Caterpillar 3306 Engine
Caterpillar 3406E Engine Complete
Caterpillar C7 Reman Engine
Caterpillar Cylinder Head in Process
Crate CAT 3306 Engines
Cummins 4BT Camshafts
Cummins 4BT Connecting Rods
Cummins 4BT Cylinder Heads
Cummins 4BT Engine in Process
Cummins 4BT Parts
Cummins 4BT Reman Engine
Cummins 4BT Remanufactured Engine Complete
Cummins 6BT Connecting Rods
Cummins 855 Big Cam Engine 3
Cummins 855 Big Cam Reman Engine 2
Cummins 855 Big Cam Reman Engine
Cummins 855 Diesel Engine 2
Cummins 855 Reman Engine
Cummins Aftermarket Parts
Cummins Crankshaft Grinding
Cummins ISB 5.9 L Diesel Engine
Cummins ISC Engine 2
Cummins ISX Cylinder Head
Cummins ISX Engine 1
Cummins ISX Longblock Engine
Cummins Lifters
Cummins and CAT Longblocks Ready To Ship
Detroit Diesel 60 Series Reman Engine 2
Detroit Diesel 60 Series Reman Engine Complete 3
Detroit Diesel Cylinder Head
Detroit Series 60 Diesel Engine
Diesel Engine Camshaft Remanufacturing
Diesel Engine Camshafts
Diesel Engine Crankshafts
Diesel Engine Follower Assemblies
Diesel Engine Geartrain
Diesel Engine Machine Shop 1
Diesel Engine Machine Shop Turbos
Diesel Engine Machine Shop
Diesel Engine Parts Warehouse
Heavy Duty Diesel Crankshafts
John Deere 4045 Engine in Process
Komatsu 6D125E Remanufactured Engine
Machine Shop Forklift
Mack E-7 Longblock Engine
Mack E-Tech Diesel Engine in Process
Mack E7 Diesel Engine
Mack E7 Engine - 1
Mack MP7 Reman Engine
New Cylinder Heads
Reman CAT 3304 Engine
Remanufactured Case Engine
Remanufactured Diesel Engine

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