Who we are
Big Bear Engine Company was originally founded as a division of a larger diesel engine remanufacturing company in Denver, Colorado. As the company grew the demand for smaller industrial Caterpillar and Cummins diesel engines became apparent and Big Bear Engine Company spun off on its own.Today we specialize in engine 3 models: Cummins 4BT Engine, Cummins 6BT Engine and the Caterpillar 3306 Engines. Our talents lie within the finite science of engineering and manufacturing of diesel engines. Big or small we’ve done them all! All of our engines are produced using brand new parts and are assembled to exact OEM tolerances.
Today we specialize in engine 3 models: Cummins 4BT Engine, Cummins 6BT Engine and the Caterpillar 3306 Engines. Our talents lie within the finite science of engineering and manufacturing of diesel engines. Big or small we’ve done them all! All of our engines are produced using brand new parts and are assembled to exact OEM tolerances.
In addition to new complete and long-block engines we also have the capabilities to remanufacture diesel engines. We can reman cylinder heads, camshafts, crankshafts, blocks, rocker assemblies. Surfacing, grinding, line boring, welding and magnafluxing are in our blood!
We believe in putting our customers first and want everyone to have a pleasant buying experience. That means if there is any problem we aim to “make things right” at the end of the day. Whether you are installing at 4BT in a Jeep or a Skid Steer we are here to make sure you get the most of your engine.
Popular Products
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Caterpillar 3306di Overhaul Engine Rebuild Kit Direct Injection (di)
$1,904.50 -
Caterpillar 3306di Inframe Engine Rebuild Kit Direct Injection (di)
$1,644.50 -
Caterpillar 3306PC Overhaul Engine Rebuild Kit Indirect Injection (idi)
$1,657.50 -
Caterpillar 3306PC Inframe Engine Rebuild Kit Indirect Injection (idi)
$1,508.00 -
Caterpillar 3306 Overhaul Engine Kit Rebuild
$1,683.50 -
Caterpillar 3306 Inframe Engine Rebuild Kit
$1,423.50 -
Cummins ISB 5.9L Major Overhaul Kit – Piston Marked 8465, 8468, 8469 (24 Valve 2002- 2007 Model)
$1,475.50 -
Cummins ISB 5.9L Major Overhaul Kit – Piston Marked 5497, 6675, 6676, 9808, 9841, 9842 (24 Valve 2002- 2007 Model)
$1,475.50 -
Cummins ISB 5.9L Major Overhaul Kit – Piston Marked 0126, 0127, 0192 (24 Valve 2002- 2007 Model)
$1,475.50 -
Cummins ISB 5.9L Major Overhaul Kit – Piston Marked 8675, 9843, 9844 (24 Valve 2002- 2007 Model)
$1,475.50
About
High Performance Diesel Engines
Big Bear Engine Company has deep roots in the heavy duty diesel industry most notably in the remanufacturing and machining of large diesel engines.
Our master engine builders all have 30+ years of building and working on diesel engines and have built engines for both the CAT and Cummins Dealers. Big or small we worked on them all! Today we specialize in three medium duty engine models: Cummins 4BT, Cummins 6BT and Caterpillar 3306.
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