Bergen Diesel LLC.

Bergen Diesel LLC. Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Bergen Diesel LLC., Automotive repair centre, 157 Mill Street, Middletown, CT.

Recently diagnosed and repaired 6.0 powerstroke in for a no start condition, upon diag we found the STC fitting had fail...
05/25/2026

Recently diagnosed and repaired 6.0 powerstroke in for a no start condition, upon diag we found the STC fitting had failed, a new updated fitting was installed along with a new set of standpipes and dummy plugs and back out to work it went!

2020’ Ram in the shop for poor performance and a check engine light, upon inspection we diagnosed a failed turbo actuato...
05/18/2026

2020’ Ram in the shop for poor performance and a check engine light, upon inspection we diagnosed a failed turbo actuator as the culprit. Installed a new actuator and back out on the road it goes!

03/18/2026

The silent Cummins killer!! We recently had a customer bring in his 22’ Ram with just over 40K miles on it for a banks intake horn and grid heater upgrade to eliminate the chances of the grid heater bolt failing and was doing it purely for peace of mind. Upon disassembly we found the bolt had fully broken and the only reason the nut hadn’t fallen into the cylinder head was because it had welded itself to the heater. The truck had no check engine light so the customer had zero warning that his truck was in danger of a catastrophic failure. We informed him of what we found and advised him to go buy a lottery ticket because he got lucky!🍀

Another DCR conversion being installed! These kits are unmatched in fit and functionality and gives you piece of mind f...
03/17/2026

Another DCR conversion being installed! These kits are unmatched in fit and functionality and gives you piece of mind for years to come. Give us a call for all of your diesel and gas vehicle needs! 860-788-3007

Recently installed Aisin AS69RC “Big Poppa” Transmission in our friend .barone1028 Ram 3500 Limited
02/12/2026

Recently installed Aisin AS69RC “Big Poppa” Transmission in our friend .barone1028 Ram 3500 Limited

Customer brought in a DPF off his Mini Excavator that had face plugged, we were able to clean this filter and get it bac...
01/30/2026

Customer brought in a DPF off his Mini Excavator that had face plugged, we were able to clean this filter and get it back to flowing just like new.

2021 L5P in the shop for a stealth turbo!
01/27/2026

2021 L5P in the shop for a stealth turbo!

3.0 Duramax in the shop for some new glow plugs! These 3.0 duramax engines pack quite the punch for the size! bergendies...
01/27/2026

3.0 Duramax in the shop for some new glow plugs! These 3.0 duramax engines pack quite the punch for the size! bergendiesel

Recently completed 2016 6.7 powerstroke, we did a long list of repairs and upgrades to this truck. Some upgrades like th...
01/09/2026

Recently completed 2016 6.7 powerstroke, we did a long list of repairs and upgrades to this truck. Some upgrades like the DCR conversion, stage 1 6R140 transmission, and Whistler stage 1 turbo might not be visible unless you’re looking for them but that Raw Piping Kit sure is!

Recently completed 22’ Ram in the shop for a Hamilton cam flat tappet conversion! Removing the failure prone hydraulic r...
01/03/2026

Recently completed 22’ Ram in the shop for a Hamilton cam flat tappet conversion! Removing the failure prone hydraulic roller lifter setup that Cummins started using in all 2019+ 6.7 engines ensures a long valve train life and peace of mind. If you’re interested in having one of these kits installed, please give the shop a call at 860-788-3007. We’d be happy to answer any questions you might have.

Address

157 Mill Street
Middletown, CT
06457

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

+18607883007

Website

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