Also Providing Mobile Truck Repair to a 30 Mile Service Radius including Charlotte, Gastonia, Kannapolis, Mooresville, Hickory, Statesville, & More
Are you searching for reliable diesel repair services in Denver, NC? Nextgen Diesel Inc. specializes in comprehensive diesel repair solutions tailored for heavy-duty vehicles. Discover how we can keep your fleet running smoothly!

Inframes and Rebuilds
Engine Inframes
An inframe engine rebuild is crucial for extending the life of your truck's engine. At Nextgen Diesel Inc., we meticulously dismantle your engine up to the frame for detailed inspection and replacement of essential components. This includes new pistons, rings, liners, and bearings, which are vital for maintaining the engine's performance and efficiency.
Our mechanics ensure every part meets the highest standards, providing reliability and longevity for your heavy-duty engines.
Complete Engine Rebuilds
For engines that require more extensive repairs, a complete rebuild is the answer. Nextgen Diesel Inc. offers full engine rebuild services that not only cover the inframe essentials but also include the replacement of additional components such as the crankshaft, camshaft, and often the cylinder heads. This service restores your engine to a 'like-new' condition, optimizing performance and fuel efficiency.
We only use OEM tools and industry-leading techniques to deliver top-quality rebuilds, ensuring your vehicle meets all operational expectations.
Electrical and Diagnostics
Advanced Diagnostics
Modern diesel engines are equipped with complex electronic systems that require sophisticated diagnostic tools to accurately identify issues. Nextgen Diesel Inc. utilizes state-of-the-art diagnostic equipment to perform thorough checks and pinpoint exact problems, from sensor failures to ECM issues. Understanding the intricate details of these systems allows us to provide precise, efficient repairs that prevent future breakdowns.
Electrical Repairs
Electrical issues in heavy-duty diesel vehicles can range from simple wiring problems to complex circuit failures. Our team is skilled in troubleshooting and repairing all types of electrical malfunctions, ensuring your vehicle’s electrical system functions seamlessly. We prioritize safety and efficiency, using only the highest quality components for repairs and replacements.
Complex Repairs
Transmission and Driveline
The transmission and driveline are vital for the operation of any heavy-duty diesel vehicle. Nextgen Diesel Inc. offers specialized services in repairing and maintaining these components to ensure your vehicle performs reliably under all conditions. From manual to automatic transmissions, our skilled mechanics apply their deep knowledge to provide durable solutions.
Suspension and Steering Systems
Handling large, heavy-duty vehicles requires robust suspension and steering systems. Our team addresses issues such as steering gear malfunction, suspension spring failure, and other critical repairs. We focus on delivering a smooth, stable ride by ensuring all components are in optimal condition.
Get in Touch Now!
If you’re in need of expert diesel repairs in Denver, NC, don’t hesitate to contact Nextgen Diesel Inc. Our team of specialized mechanics is ready to bring your heavy-duty vehicles back to peak performance. Call us today at 704-257-6420 for a consultation or to schedule repairs.
Let us help you minimize downtime and maximize efficiency!
Professional Diesel Mechanic Services
Explore our extensive range of heavy-duty diesel mechanic services tailored for light to heavy-duty vehicles & commercial fleets, including DOT inspections, welding and fabrication, and preventive maintenance. At Nextgen Diesel Inc., we go beyond traditional truck repairs to also cater to RV's, trailers, and heavy equipment. Our certified diesel technicians use the latest diagnostic tools to guarantee the highest-quality service.
Next Gen Diesel offers professional diesel mechanics and our heavy-duty truck repair shop in Denver, North Carolina. We provide service for light to heavy-duty diesel vehicles, trailers, heavy equipment, & commercial fleets, both in-shop, & via a 30-mile mobile service radius that includes service to Charlotte, Gastonia, Kannapolis, Mooresville, Hickory, Statesville, & more.