Experience
The Power of Diesel

Brand New Cummins
4BT and 6BT Engines

Used & Remanufactured
Diesel Engines

Industry Leading
Warranty

Industrial
Applications

Diesel Engine
Off-Roading Applications

FAQs

Q?

Where are you located at?

A.

We are located in the heart of the Rocky Mountains in Denver, Colorado. Feel free to stop by our facility anytime and we will show you are machine shop and engine remanufacturing facility.

Q?

What is the typical cost savings of surplus engines?

A.

We are an alternative to going to the dealership. The Cummins 4BT, 6BT and CAT 3306 engines haven't been newly manufactured by the dealers in mass quantities in 20+ years. Newer models have replaced legacy engines. That being said dealerships will manufacturer one of these engines for a premium price. It is not uncommon to pay double or triple the price at the dealership for the same engine. By going with a surplus engine from us you save a significant amount of money all the while getting the same engine with the same parts.

Q?

What is your lead time?

A.

We can ship new and used engines as well as new parts the day of order. Remanufactured parts and engines are based upon the production schedule. Note that orders late in the day are processed the following business day.

Q?

What is the break-in procedure for a new engine?

A.

It is very important not to use a synthetic oil for the first 5,500 miles or so. Synthetic oil's lubricity is thinner than standard oil and will not allow the rings and gaskets to seat properly. During the first year of operation the engine's internal components will expand and contract multiple times while reaching it final structural tolerances. After you get your new engine from us we recommend that you put in under a normal load and get it going. Try not to let the engine idle for extended periods, hard shift or accelerate quickly for the first 5,500 miles or push the engine outside of normal load conditions. Keep an eye on your temperature gauges and be smart about not letting the engine overheat.

Q?

Do you use OEM or Aftermarket Parts?

A.

Our brand new engines are all built with ISO 9001 Certified new aftermarket parts. The little known secret in the automotive/diesel parts industry is that the OEM brands are the EXACT same parts as the aftermarket companies. Many OEMs haven't made their own parts in 20+ years. Both OEM and Aftermarket Parts are produced in the same factories but simply packaged in different boxes. Our failure rating on aftermarket parts is less than 1% overall. Very rarely do we ever see a warranty issue regarding a parts failure.

Q?

What engine models do you offer?

A.

Big Bear Engine Company's humble beginnings come from the remanufacturing industry. We are a company of precision machinists and engine builders and our specialty lies in engineering of remanufactured diesel engines. The company was originally founded as a division of a larger remanufacturing outfit in Denver, Colorado but spun off as its own entity to focus on the smaller Caterpillar and Cummins diesel engine market. Today we focus primarily on brand new never been run Caterpillar 3306, Cummins 4BT (3.9L) and Cummins 6BT (5.9L) engines. In addition new engines we also offer used and remanufactured options.

Q?

Do you offer high performance engines?

A.

Unfortunately we do not. We are machinists and engine manufacturers first and foremost. Our Caterpillar and Cummins engines are all built to OEM (original engine manufacturer) specifications. This means you will always get an engine that is an exact fit to your application. When you purchase and engine from us we will always match your Engine Serial Number (ESN), Critical Parts List (CPL) or Arrangement Number to the engine you need. The Cummins 4BT is pretty much a universal application where as the 6BT (5.9 L) and CAT 3306 engines have many different variations of the block, head and piston configurations.

For those customers looking for performance upgrades for a 4BT Jeep Swap we offer a list of installation and performance experts who can assist you with upgrades to your engine after purchase. With a 4BT Jeep Swap there are many things you can do such as tweak the lift and profile of the camshaft, upgrade the turbo, and tweak the intercooler and aftercooler systems. Suspension and lift kits are a big "must have" if you are installing a 4BT into a Jeep Wrangler as the engine is 1/3 the weight of the entire vehicle.

Q?

Do you offer gas engines?

A.

We only deal with medium to heavy duty diesel engines.

Q?

Do you offer financing?

A.

Yes, we do have financing available for those who prefer a payment option that preserves working capital.

Financing an engine or parts purchase is relatively simple:

- Conserve cash flow
- Application process roughly takes 24 hours
- Fixed monthly lease payments
- No hidden fees or adjustable rate leases
- Combine engine lease and installation in one payment
- Competitive lease rates
- Tax savings under IRS Section 179

Give us a call and we can walk you through the process.

Q?

Do you install the engines and do service work?

A.

Unfortunately we do not install the engines or do any type of inframe service work. We are a company of engine builders and precision machinists. If you are looking for performance experts or simply a facility to drop in your engine we offer a list of installation partners that can service your new engine.

Q?

Do you ship internationally?

A.

We ship to all 50 States, Canada and Mexico on a regular basis through our distribution centers in Denver, Los Angeles, Houston, Cleveland, Miami, Portland, San Jose and Atlanta. We will ship your parts from the nearest warehouse to your location. If you require blind shipments we also have the ability to complete your request.

We also have the ability to ship parts and engines internationally. We have shipped parts and engines to New Zealand, Brazil, Uruguay, Russia and the Virgin Islands to name a few places.

Check out our shipping page for more information about freight shipments.

Q?

What is your warranty policy?

A.

We have one of the strongest warranties in the diesel engine business.

  • Remanufactured Engines - 1 Year Unlimited Miles; first six months parts and labor, second six months parts replacement.
  • New Engines - 6 Months Unlimited Miles Parts Replacement
  • New Parts - 2 Year Unlimited Miles Warranty

You can read the full warranty in detail here.