When it comes to cooling, we offer so much more than just air conditioning repair. As owners of high-performance diesel trucks add performance tuners, turbochargers, or rely on demanding applications, excessive heat builds up in the engine. That heat can rapidly reduce performance and cause high-cost auto repairs down the road. Come to RG Diesel, LLC and let us diagnose issues with heat build-up.

Every day, we install quality high-performance oil coolers, radiators with high flow water pumps, and flex fans for driving enthusiasts in Greeneville. Need a high-flow thermostat with a 180°F open temperature rating so your diesel engine can get back to work fast? When it comes to keeping your engine cool on the track or around town, RG Diesel, LLC is the name you can trust.