Look no further for all of your small heavy duty diesel engine needs. We here at Big Bear Engine Company specialize in Cummins 4BT, Cummins 6BT and Caterpillar 3306 replacement parts assemblies. Our high performance diesel engines are manufactured with all brand new parts and produced to the specific OEM serial numbers to match your application. Cummins 4BT Engines in particular are perfect for 4BT Jeep Swaps as well as Industrial Applications.
• Cummins 4BT, 6BT, 6CT and CAT 3306 Replacement Assemblies Available
• Long Blocks and Extended Long Block Component Build Options
• Used & Remanufactured Engines Also Available
• Get Back to Work Quickly – Ships Anywhere in the World
• 1 Year Unlimited Miles Warranty
• Save On Average 57% Over Dealers
• 4BT Jeep Swap Friendly
• Industrial Rated: Skid Steers, Dozers, Loaders, Wood Chippers, Forklifts
When a component build option isn’t ideal we also offer many used Cummins 4BT engines as well as remanufactured engines. We are an experience source for used Cummins 4bt and Cummins 6bt engines which are all low miles, run tested and have been inspected for major wear. Our sister company remanufactures everything to OEM spec using brand new parts at the neighboring facility facility in Denver, Colorado. The two companies consist of a full service machine shop and engine rebuilding facility with 30 machinists and master engine builders. Remanufactured Cummins 4BT Engines all come with a 1 year warranty and are inspected with using a rigorous 11 point QA procedure before they ever leave our facility.
We are a one stop shop for all the parts you need for your Cummins 4BT, 6BT and CAT 3306 engines. Whether you are looking for a water pump or a full overhaul kit for your engine; we got you covered. Call us today for turbos, injectors, water pumps, oil pumps, aftercoolers, camshafts, crankshafts, cylinder heads, crankshafts, bearings, pistons, inframe kits and overhaul kits. Cummins 4BT Rebuild Kits can ship the same day as order.
A popular application for Cummins 4BT Engines is in the use of off-road vehicles. 4BT Jeep Swaps are more than an engine option but a way of life for many enthusiasts. Cummins 4BT Engines are used in Jeep Wranglers, Jeep Grand Cherokees, Land Rovers, Toyota 4Runners, Toyota Land Cruisers, Nissan Xterras, Mercedes-Benz G500s, Ford F150s, Ford Raptors, Dodge Ram 2500s, and Chevy Colorado’s. 4BT engines are swapped in due to the increased horsepower and rugged torque ratios.
The Cummins 4BT Engine and the bigger Cummins 6BT Engine are found in many small industrial applications. They are a popular engine choice for their durability, ease of use and reliability to get the job done. We understand the industrial off-road market… every day you are down you are losing money. Our diesel engines can be shipped the same day of order. If you have a dozer, skid steer, forklift, boom lift, wood chipper, baggage cart, loaders, street sweepers, step van, tour bus, RV or small marine application the Cummins 4BT, 6BT or the CAT 3306 engine is perfect to get back to work again.
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.