Phone/Text (803) 980-7537
Address 583 Linkwood Rd
Rock Hill, SC 29730
Hours M-F 8:00 AM - 5:00 PM

DIESEL MAINTENANCE AND REPAIR

Great Results.
No BS.

Schedule Service

Book Your Truck's Service Appointment

Specializing in Power Stroke, Cummins and Duramax Engines

Todd Hull
Jake’s team is awesome. Very knowledgeable and comfortable working on modded rigs. Would absolutely recommend them for anyone needing a good shop.
Jeff Schott
I was pulling my 5th wheel to Florida when I started getting engine light and trouble codes on my F350 dually as I was going through Charlotte around noon. I called State Line (15 minutes away and on my route) and Jake said stop in, we will look at it right away. There was plenty of room to back up my 5th wheel and unhook. Jake offered that we could stay there overnight if needed, he even offered to let us plug in for electric. They immediately diagnosed my issues. Jake communicated with me for approval and said they could get me back on the road before 5pm. We hung out in our camper and around 4pm Jake backed the truck up to our RV and said you're ready to get back on the road. I can't thank you enough for the immediate attention and getting us on our way. Overall wonderful experience with Jake and the team at State Line Diesel! We ended up making it to Fort Myers on schedule.
Donna Schott
Had some issues with the truck while traveling. They got us in, did the repairs and we were back on the road the same day! Thank you!
Kris Osgood
Service was great, prices were great, and the information provided was even better. Will be returning.
Scott Hermanns
I had some work done on a company truck and they took good care of us. Great guys and honest work! I would highly recommend
Christopher Dix
I have a Cummins... they've helped me out a lot, they're good people and know what they're doing.
Elevate Media
I drive here all the way from Charleston because I know they'll take good care of my truck. It's more than just a truck and they understand it, any issue I've had with my truck they knew exactly what it was to fix it. So now they do all my diesel work, it's worth the trip for me.
Costan Bacogeorge
I do not usually leave reviews but I have been searching for a good diesel shop for years often leaving me to do the work myself.
Thankfully someone recommended me to Jake at Stateline.
They took my truck in, communicated through the whole process, and got my truck running better than it ever has.
I highly recommend Stateline diesel performance and will be returning in the near future.
Todd Gleason
Jake was fantastic to deal with, my daughter had an issue with her Ram Eco Diesel which was tuned already, being from
Canada and a long way from home I wanted someone I could trust to help her out and understood tuned trucks. He did what he said he would do, and did it well, no bullshit, highly recommend this shop for diesel or anything truck. If I lived anywhere near them I would be a regular.
Ruben Duran
Took my truck in last minute after I stalled on the side of the road. They took care of me within a couple days and had me back up and running.
About Us

We deliver expert diesel repairs and custom upgrades without the hidden fees or the runaround.

When it comes to your truck, experience, skill, and attention to detail make all the difference in getting you back on the road quickly and safely. At State Line Diesel Performance LLC, we are the trusted diesel truck shop in the Charlotte, North Carolina area. With over 15 years of hands-on experience, our team provides the maintenance and repair services your truck needs to perform at its best.

We’ve built strong partnerships with leading brands in the industry, and we use OEM parts to ensure your truck runs reliably mile after mile. From routine maintenance like oil changes, fluid checks, and brake service to complex repairs including engine work, transmissions, and diagnostics, we handle it all with professionalism and no shortcuts.

Your truck is a vital part of your work, and you can rely on State Line Diesel Performance LLC to keep it running safely, efficiently, and dependably. When you need diesel maintenance or repair you can trust, we deliver results—every time.

Learn About State Line Diesel

Why Choose State Line?

Experience

15+ years of experience in the motorsports industry working with Hendrick Motorsports and Stewart Hass Racing.

Fleet Service and Repair

100%

Detail - Oriented

The attention to detail we deliver in all our services is second to none.

Maintenance and Repair

100%

Warranty

We offer a 12-month/12,000-mile workmanship warranty in addition to standard manufacturer warranties for our parts.

Customer Satisfaction

100%
Schedule Service

State Line Diesel Performance LLC

Book Your Service

Our Services

Truck Maintenance & Repair

Schedule truck Service

Vehicle Customization

Explore Custom Options

Fleet Maintenance & Repair

Manage Your Fleet

Wheels & Tires

Browse wheels & tires

What Our Customers Say

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I was having a fueling issue on my truck, and the guys over here at State Line Diesel Performance LLC did diagnostics and found I had an injector going bad. Their communication was great throughout the whole process. They are very professional and completed the work in a timely manner. Truck runs like a top again. Highly recommend this shop!

5
Brock R.
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I had my Rough Country leveling kit put on my 2016 4Runner by the team at State Line Diesel Performance LLC, and the guys did a phenomenal job. Jake & Dawson answered all my questions and took care of my car just a few hours after I dropped it off. I can’t say enough about their professionalism & their knowledge of the business. I couldn’t be happier with the end result, and I plan on using these guys for all my cars’ needs. Top-notch service!

5
McCain B.
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Jake and the crew are awesome to work with. They can handle anything from routine maintenance or mid to wild one-off builds. The team did a fantastic job customizing my truck. The truck gets compliments everywhere I go and performs equally well. Glad to finally have talent in Rock Hill that can support the truck enthusiast crowd.

5
Jeff P.
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Our Diesel Repairs in Action

See Truck Builds

See Truck Builds

Check Out Wheels

Check Out Wheels

View Engine Work

View Engine Work

See Our Gallery

Our Suppliers

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Our Amenities

Waiting Room

Waiting Room

Complimentary Wi-Fi

Complimentary Wi-Fi

Fresh Coffee

Fresh Coffee

Relax While We Work on Your Truck

We know your time is valuable. That’s why our shop is equipped with a comfortable waiting area designed to make your visit as smooth as possible. While our technicians take care of your truck or diesel vehicle, you can take advantage of:

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Free Wi-Fi

Stay connected, catch up on work, or stream your favorite shows.
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Comfortable Seating

Relax in a clean, climate-controlled environment.
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Convenient e-Waiting Options

Prefer not to wait on-site? We’ll keep you updated digitally so you can step out and return when your vehicle is ready.
At our shop, we’re not just focused on top-notch repairs and maintenance – we’re committed to making your experience easy, efficient, and stress-free.
Reserve Your Spot – Coffee’s On Us!

Schedule Your Diesel Repair Today –

Get Back on the Road Faster