Big Bear Engine Company

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Big Bear Engine Company Specialists in remanufactured, surplus and used Cummins 4BT, 6BT & Caterpillar 3306 Diesel Engines. All machine work is done in house in Denver, CO.

We specialize in new surplus Cummins 4BT, 6BT and Caterpillar 3306 diesel engines. In addition to surplus engines we are also a full service machine shop and engine remanufacturing facility. We also are a dealer for aftermarket parts with over 100,000+ parts available for all of the biggest diesel engine brands including Caterpillar, Cummins, Detroit, International, John Deere and Mack.

"Great service. They answered all my question and delivered my engine fast. I highly recommend Big Bear Engine" says R...
10/19/2026

"Great service. They answered all my question and delivered my engine fast. I highly recommend Big Bear Engine" says Rob on Google

★★★★★ Great service. They answered all my question and delivered my engine fast. I highly recommend Big Bear Engine

"Corey Summer helped me out step by step, great customer service . We found out that the injectors that I ordered got d...
10/17/2026

"Corey Summer helped me out step by step, great customer service . We found out that the injectors that I ordered got delayed due to a delivery truck brake down and him and his manager were able to get it moving to get the new engine i got from Them up and running for my dump truck." says Juan on Google

★★★★★ Corey Summer helped me out step by step, great customer service . We found out that the injectors that I ordered got delayed due to a delivery truck brake down and him and his manager were able to get it moving to get the new engine i got from Them up and running for my dump truck.

"Great company to deal with, and great service team." says logan on Google
10/17/2026

"Great company to deal with, and great service team." says logan on Google

★★★★★ Great company to deal with, and great service team.

"The Big Bear team are very professional and the customer service is great." says David on Google
10/03/2026

"The Big Bear team are very professional and the customer service is great." says David on Google

★★★★★ The Big Bear team are very professional and the customer service is great.

Here at we love the "before shots" as much if not more than the "after shots". Because we get to see our work being imp...
10/01/2026

Here at we love the "before shots" as much if not more than the "after shots". Because we get to see our work being implemented into your work!! WE love it when you share your work.... So please SHARE your work with us, this helps bring new and old ideas to all of our customers, your idea maybe the very thing that helps them get to the next step of the build they are working on! As always, thank you for having us along for the ride!

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"We had a great experience working with Big Bear Engine Company. Nikki and the team were extremely helpful throughout th...
09/30/2026

"We had a great experience working with Big Bear Engine Company. Nikki and the team were extremely helpful throughout the entire process and did a great job keeping us informed along the way. Communication was clear and thorough, and they provided detailed shipping, startup, break in, and warranty information to make sure we had everything needed for our customer.

Working in the parts industry, good communication and.." says Steve on Google

★★★★★ We had a great experience working with Big Bear Engine Company. Nikki and the team were extremely helpful throughout the entire process and did a great job keeping us informed along the way. Communication was clear and thorough, and they provided detailed shipping, startup, break in,...

"The staff are very helpful and took great care of me. Aaron was great to work with and very knowledgeable! I will defin...
09/03/2026

"The staff are very helpful and took great care of me. Aaron was great to work with and very knowledgeable! I will definitely be using you guys in the future!" says Tony on Google

★★★★★ The staff are very helpful and took great care of me. Aaron was great to work with and very knowledgeable! I will definitely be using you guys in the future!

"Good people to work with and very helpful. Thanks for Big Bear team package!! Highly recommend!!!" says Timmy on Google
08/30/2026

"Good people to work with and very helpful. Thanks for Big Bear team package!! Highly recommend!!!" says Timmy on Google

★★★★★ Good people to work with and very helpful. Thanks for Big Bear team package!! Highly recommend!!!

Just a photo dump.. To be continued! Call us if you have a project that you want to make cooler than the "LS" crowd... ...
08/27/2026

Just a photo dump.. To be continued!

Call us if you have a project that you want to make cooler than the "LS" crowd... projects are cooler if they aren't just like everyone else's!

"I Puchased a Cummins 8.9L nature gas engine from Big Bear. They are excellent operators. Thanks to the team!!" says Br...
08/17/2026

"I Puchased a Cummins 8.9L nature gas engine from Big Bear. They are excellent operators. Thanks to the team!!" says Brendan on Google

★★★★★ I Puchased a Cummins 8.9L nature gas engine from Big Bear. They are excellent operators. Thanks to the team!!

Address

18540 Apache Drive #160
Parker, CO
80134

Opening Hours

Monday 7:30am - 4:30pm
Tuesday 7:30am - 4:30pm
Wednesday 7:30am - 4:30pm
Thursday 7:30am - 4:30pm
Friday 7:30am - 4:30pm

Telephone

(720) 920-9162

Website

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