ASE™-Certified Technicians

Proudly Serving:


• Southeastern Connecticut
• Mystic, New London,
  Norwich,  Voluntown & Southern Rhode Island

Hours of Operation:  


• Monday–Friday, 8 a.m.–5 p.m.
• Saturdays by Appointment

Related Links:


Jasper Engines

Premier Performance




  Chamber of Commerce

National Federation of
  Independent Business

Napa Heavy Duty Truck Care Center

Pawcatuck, CT Diesel Repair

RJ's Diesel Repair Inc.

Receive dependable maintenance and roadside assistance from our truck repair specialists in Pawcatuck, Connecticut. For the past 18 years, RJ's Diesel Repair Inc. has been combining family values and great customer service. We're family-owned-and-operated, and provide comprehensive repairs.

We're here for you.
RJ's Diesel Repair Inc. is here when you need fast, convenient roadside assistance. Our roadside vehicle is fully equipped to come to your location, assess your needs, and perform repairs like engine work and tire service. Sean is here to answer your call Monday through Friday from 8 a.m. to 5 p.m. When you contact our roadside assistance line at (860) 625-0676.

Keep your truck running at 100 percent.
Our preventive maintenance services feature oil changes, including oil, oil filter, fuel filter and air filters.We grease the chassis and top off all fluids. We also offer thorough vehicle inspections and will examine your truck for any wear and tear.

We are proud to use Jasper™ engines and transfer cases. Every Jasper engine comes with a 3-year, 100,000-mile warranty. Plus, we overhaul tractor-trailers and mid-size pickup trucks.

Our state-of-the-art computer diagnostics detect problems in engines from brands like Caterpillar™, Cummins™, Mack™, Detroit Diesel™, and Navistar™.

Maintenance, repair and more!
We offer full A/C services on all makes of trucks. We also make custom Gates™ hydraulic lines while you wait and carry a full line of Gates hydraulic fittings. We have Weatherhead hydraulic lines as well. Are you in need of tires for your truck or equipment? We carry many name brand truck tires for pickups to tractor trailers including off road equipment. We now offer a full transmission flush for light duty vehicles.

Get to know RJ's Diesel Repair Inc.:

  • Vehicle Inspections - RI state licensed inspections available here
  • About Our Owner - Meet our owner and operator
  • Specializing in maintenance of 6.0 liter Fords.
  • Also servicing and reparing gas truck and vans 

You can count on RJ's Diesel Repair Inc. for fast, safe roadside assistance! Call 860-625-0676 for immediate help throughout Connecticut and Rhode Island.

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