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Cummins Diesel Service in Brooksville, FL

RDI Power (RedLine Diesel, Inc.) is a provider of service, maintenance, and repairs on Cummins diesel-powered trucks, equipment, and generators of all sizes.

Our certified diesel mechanics perform repairs daily on:

  • Light-duty trucks (e.g., Nissan Titan XD; Dodge RAM 2500, 3500, 4500, and 5500)
  • Medium-duty trucks (e.g., RAM, Freightliner, International, Mack MD6 & MD7, more Class 6 & 7 trucks usually running on 6.7-L Cummins turbo-diesel engine)
  • Heavy-duty trucks (e.g., Class 8 trucks running on Cummins X15, ISX15, ISC, and ISM engines)
  • Busses
  • Generators
  • Water pumps
  • Anything Cummins-powered except for marine applications
A Cummins diesel engine brought into RDI Power

Light-Duty Trucks

The diesel technicians at RDI Power are experienced in all levels of service, repairs, and upgrades of the Cummins B-Series engines (like the 6.7-L turbo-diesel engines commonly found in Dodge and RAM 2500 through 5500 trucks). From the first generation 5.9L 6BT 12-valve VE pump engines through the very latest 6.7L with common rail, we know these trucks as well as anyone.

We also work on 5.0-liter Cummins V8 (found in Nissan Titan XD), 5.9-L Cummins B-series, and Cummins QSR engines.


With proper maintenance, these incredible engines are known to perform for many hundreds of thousands of miles. Basic maintenance on the B-series includes:

  • Oil and filter change
  • Fuel filter replacement
  • Air filter replacement
  • Coolant replacement


The truck itself will have other maintenance requirements depending on its configuration. These may include:

  • Transmission service
  • Differential service
  • Transfer case service
  • Power steering service
  • Brake fluid flush


We provide all levels of repairs on these trucks and engines. From simple repairs like water pump replacements and oil leak repairs to major overhauls and advanced diagnostics, we are BEYOND a dealership alternative for RAM and Nissan XD trucks.

When it comes to the parts we use, we only use the best. In some cases, we use parts from the original equipment manufacturer. In other cases, we use aftermarket parts that are better than the original parts. Our years of experience working on these trucks have given us the knowledge of which parts are the best parts available.

For fleet vehicles, we offer a 2-year / 24,000-mile warranty on repairs. For non-fleet vehicles, we offer a 3-year / 36,000-mile warranty. That’s among the best in the industry.

Performance Upgrades

RDI Power adheres to EPA guidelines for performance upgrades.

When looking to get better performance or fuel mileage from your truck, there is no shortage of upgrades available for the B-Series engine. The way these upgrades are packaged and the proper installation and tuning of these upgrades can make all of the difference in the performance and longevity of your truck.

We take pride in doing Cummins performance upgrades the right way.

Off-Road Performance

For those of you who need extreme performance upgrades for your off-road application, we’re excited to work with you!

Yes, we’re diesel mechanics and we love the work we do whether it’s the daily grind of fixing a broken diesel engine or maintaining a perfectly running truck, but nothing gets us going like the feeling you get in your chest when standing next to a 1000+ horsepower Cummins engine revving at a few thousand RPM.

Need someone to build that engine for your tractor-pull truck or drag truck? We’re your guys!

RDI Power is a proud dealer for SCT Tuners and Pusher Turbo Systems.

Medium Duty Trucks

Many of the medium-duty trucks on the road today are powered by Cummins powerplants. These trucks are mostly powered by the B, ISB, L, ISL, and ISC Series of Cummins engines. Such models include:

  • RAM trucks running 6.7-L Cummins turbo-diesel engines;
  • Freightliner trucks running on 6.7-L and 9.0-L Cummins turbo-diesel engines;
  • International trucks running on the Cummins 6.7-L diesel engine;
  • Mack MD, MD6, & MD7 running on 6.7-L Cummins B6.7 diesel engine;
  • Class 6 & 7 trucks running on 6.7-L Cummins B6.7 diesel engine and 8.9-L Cummins ISL diesel engine.


The diesel mechanics at RDI Power can keep your fleet of medium-duty trucks on the road with their high level of experience and technical knowledge of these engines. 

In addition to the Cummins engines in these trucks, we can maintain the rest of the trucks as well. Our shop is equipped with the lifts and tooling to perform all levels of repairs on the various systems of these trucks, including:

Heavy Duty Trucks

For the Cummins engine of your over-the-road tractor, we’ve got you covered. From an in-frame overhaul with liner replacement on an older 855 Cummins to advanced diagnostics on your Cummins X15 or ISX15, that’s all within our realm of expertise. And we also work on class 8 trucks running on 8.3-L Cummins ISC and 10.8-L Cummins ISM engines.

Our team is here to put together custom maintenance plans for your fleet of 1 or 100 trucks. We’d love to be your partner in maintaining million-mile trucks that have never had a breakdown.

Buses and RVs

When it comes to servicing busses and RVs, it can be hard to find a shop that can accommodate vehicles of that size. We’re happy to provide the best maintenance and repair for your Cummins-powered bus or RV.

Bus Fleet Service

Not only can we provide service for your privately owned bus, but we can also provide service for your entire fleet of busses. We know downtime is a killer for a fleet operator, so we always give priority to our fleet accounts to make sure your business stays running like a top.

RV Maintenance and Repair

When it comes to servicing busses and RVs, it can be hard to find a shop that can accommodate vehicles of that size. We’re happy to provide the best maintenance and repair for your Cummins-powered bus or RV.

Generator Repair and Service

Cummins produces generators for many different applications. From the small Cummins Onan generators found in RV applications to the massive gensets found in industrial applications, we perform maintenance, service, and repair on the Cummins engine of those generators.

For large industrial applications, we provide on-site service when necessary.

Contact RDI Power for Cummins repair, maintenance, and service in Middle Florida

The service department at RDI Power is your best choice when your Cummins diesel is in need of service or repair. Our shop is equipped with the proper tools, equipment, and diagnostic software to perform a thorough repair or service on your truck, van, or equipment.

With lifts that can handle trucks and vans, heavy-duty engine hoists and transmission jacks, and factory diagnostic and programming equipment like our Cummins Insite diagnostic tool, we’re equipped to handle nearly anything with a Cummins powerplant.

To schedule service or repair for your Cummins diesel, call us at (352) 433-3800 or use our online scheduling form.