About Us

General Maintenance & Repairs


As a small business, we understand the importance of operating on a budget. We use the most up to date diagnostic software and techniques to troubleshoot your vehicle issues.

 Failure to maintain fluid levels and change filters is the number one killer of diesel engines. Diesel Shop takes care of you from the rear end to the front end. Oil changes, transmission and cooler flushes, A/C tests and recharge, battery tests, and air filter cleanings. We treat your truck, like it was our own and use products we stand behind. 

Diesel Performance


 Diesel Shop's knowledgeable staff members have firsthand experience building reliable power for stock and modified PowerStroke, Cummins and Duramax pick-ups. Our diesel obsession is fueled by passion and commitment to gaining the best performance of your engine and transmission.

Dyno Testing & Services


As of 2014, we now offer in house dyno testing and services!! A dynamometers main task is to measure horsepower and torque in a controlled environment. Our DynoJet 224xLC is equipped with an Eddy Current Load Absorption Unit designed to perform loaded tests including step, sweep and closed loop. With the NEW WinPEP 8 software the dyno has unlimited horsepower and torque measurement capacity. 

Career Opportunity

Featured Products

Contact Us

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Diesel Shop LLC

25 Westwood Avenue, New London, Connecticut 06320, United States

(860) 437-1235


Monday - Friday: 9:00 am - 5:30 pm

Saturday: By Appointment

Sunday: Closed