Mechanic provides mobile truck repair in Plaistow, NH
about us

Bringing Service to Your Doorstep - We're Here to Serve You!

Whether you're a construction company relying on your heavy machinery or a fleet owner looking to keep your diesel trucks running smoothly, we've got your back!

Schedule Service
our story

Established in 2017 by Seth Bubar, we take immense pride in being the go-to local business that the community trusts.

Welcome to Tri-State Diesel Repair, your one-stop destination for all your heavy-duty diesel repair needs! Established in 2017 by Seth Bubar, we take immense pride in being the go-to local business that the community trusts.

Our journey started when Seth, an experienced technician, realized that he had hit the ceiling in terms of growth while working for others. So he fearlessly decided to rev up his own venture, and Tri-State Diesel Repair was born!

With over two decades of experience in the industry, Seth knows the ins and outs of heavy equipment like the back of his wrench. He earned his stripes in the military, gaining invaluable knowledge and skills that have become the backbone of our services. At Tri-State Diesel Repair, we pride ourselves on being a local business that the community relies on. When you come to us, you become part of our family, and we treat your diesel workhorses with the utmost care they deserve. Our dedication to honesty and trustworthiness is the fuel that drives our success. We believe that transparency and clear communication with our customers lead to long-lasting relationships and unbeatable service. To serve you better, we have not one but two fully-equipped mobile units that are always ready to hit the road and come to your rescue. When your diesel machine is stuck, we'll be there in no time, no matter where you are. You can count on us to get the job done efficiently and get you back on track without wasting your valuable time.

So, the next time you need reliable and expert diesel repair services, remember that Tri-State Diesel Repair is just a call away. Whether you're a construction company relying on your heavy machinery or a fleet owner looking to keep your diesel trucks running smoothly, we've got your back! Join our list of ever-growing satisfied customers and experience the difference a dedicated and fun-loving team can make. Trust us with your diesel machines, and you'll never have to worry about their performance again. Together, we'll keep your engines roaring and your business soaring!

"Seth, is friendly and professional.  He showed up on time and finished the job. Excellent mechanic!"
Jevon Hamm

New England Firewood, LLC

5 star review

"I have been using Wrenchn-It Diesel for over 4 years now. Started with oil change for dump truck, mobile service for replacing hydraulic lines and belts on machines. Seth has always been there on short notice and is a great mechanic. Just a great overall guy and very easy to work with. Highly recommend!"

"I had a hub bearing go out on my truck. Butler's Truck Repair got me fixed up quickly and did great work at a very fair price. I highly recommend them for all repairs, from pickups to semi trucks. Thanks  to Sam for the great work."

Craig Loring

5 star review

"I gotta give a big shoutout to the team at WRENCHN’ IT DIESEL REPAIR! They went above and beyond to accommodate me and my family in getting our rig back on the road!
I CANT THANK YOU ENOUGH SETH!"

"I had a hub bearing go out on my truck. Butler's Truck Repair got me fixed up quickly and did great work at a very fair price. I highly recommend them for all repairs, from pickups to semi trucks. Thanks  to Sam for the great work."

DANNY MOHAMMED

5 star review

"Studs broke on my truck called all around nobody was able to fix it or had the time, called wrench it and he said no problem but it will be a wait,the man went pick up studs nuts and rims And came out to me and fixed in the rain. Thumbs up to this guy. All our truck repairs up in this area will be done by them. Highly recommend 👌"

"I had a hub bearing go out on my truck. Butler's Truck Repair got me fixed up quickly and did great work at a very fair price. I highly recommend them for all repairs, from pickups to semi trucks. Thanks  to Sam for the great work."