Driven by Diesel, Built on Passion Since 2016 — Serving Northwest Arkansas  

Diesel Passion Meets Proven Repairs 

At 4W Diesel Injector Service LLC, our journey began with a passion for diesel performance and the pursuit of power. In 2016, two friends set out to build a competitive race truck, and ended up creating something even greater. That shared passion evolved into a commitment to serving diesel truck owners in Springdale, Tontitown, and across Northwest Arkansas. After years of competing across the country and working hands-on with high-performance diesel engines, our founders realized their true calling wasn’t just racing—it was solving the everyday challenges diesel drivers face. What started as a hobby quickly became a trusted resource for friends, neighbors, and fellow enthusiasts. Today, that same hands-on dedication lives on at our shop at 1849 W Henri De Tonti Blvd, Springdale, AR 72762, where we specialize in diesel truck repair.  

Experienced Diesel Technicians Committed to Quality  

Since opening our doors in 2022, we’ve grown from a small home-based operation into a full-scale diesel truck repair facility serving Tontitown, Springdale, and the greater Northwest Arkansas area. Our team understands how essential diesel trucks are to your work, livelihood, and daily routine. That’s why we’ve built our shop around fast, dependable service you can trust. Whether you drive a Ford Power Stroke, Dodge Cummins, Chevy Duramax, GMC, International, or another diesel make, we’ve got the tools and training to get you back on the road quickly. We proudly serve farmers, contractors, fleet operators, and individual diesel owners who rely on their trucks to perform under pressure. With walk-in service, same-day repairs on many jobs, and easy drop-off options, we make it simple to get the diesel repair support you need. You can reach us at (479) 750-4470 during our weekday hours, Mon – Fri: 8:00 AM – 5:00 PM (Closed Daily 12:00 PM – 1:00 PM for lunch).  

Diesel-Focused, Community-Backed  

Our reputation is built on more than technical skill—it’s built on relationships. We’re proud to be part of the Tontitown and Springdale communities, serving the hard-working people who keep Northwest Arkansas running. Every diesel truck that enters our facility is treated with the same care and precision we brought to our first race build. Whether you’re in for preventative maintenance, diagnostic troubleshooting, injector services, or a complete engine overhaul, we deliver professional results with honest communication. We use only quality replacement parts and accept all major forms of payment, including American Express, MasterCard, Visa, Discover, and the Bosch Credit Card. From local automotive shops to large-scale construction companies, customers across the region trust us to handle their diesel repairs with professionalism and pride. Our mission stays the same as we continue to grow: to provide reliable diesel truck repair that keeps Tontitown and Springdale moving forward.

Frequently Asked Questions 

What types of diesel vehicles do you work on?

We service all major diesel truck brands, including Ford, Dodge, GMC, Chevrolet, International, Volkswagen, Isuzu, and Nissan, as well as commercial vehicles and fleet trucks.  

Can I get same-day service?

Yes. We offer same-day diesel repair service on many jobs and welcome walk-ins during business hours, Mon – Fri: 8:00 AM – 5:00 PM (Closed Daily 12:00 PM – 1:00 PM for lunch).  

What forms of payment do you accept?

We accept Visa, MasterCard, Discover, American Express, and the Bosch Credit Card.  

Do you offer services for businesses and fleets?

Absolutely. We regularly work with local farmers, service providers, construction firms, and other commercial clients that rely on diesel trucks to keep business running.  

Where are you located?

Our diesel repair facility is conveniently located at 1849 W Henri De Tonti Blvd, Springdale, AR 72762. Call (479) 750-4470 to schedule your appointment today.