careers

Build a Career at Tri-State Diesel Repair

Tri-State Diesel Repair has garnered a reputation for unparalleled excellence as a premier repair and service entity. Operating as a fully mobile enterprise headquartered in Plaistow, NH, we continuously seek fresh talent to enrich our exceptional team.

Are you ready to dive headfirst into the world of heavy-duty diesel repair? Look no further—Tri-State Diesel Repair is calling your name! Established in 2017 by Seth Bubar, this isn't just a repair shop—it's a diesel-powered journey of excellence!

Picture this: two mobile units, fully equipped and raring to roll, ready to tackle challenges wherever they arise. And let's not forget about our experienced technician, who's a true maestro of all things diesel. With nearly two decades of hardcore experience, Seth knows the ropes like nobody else.

Why Tri-State Diesel Repair, you ask? Seth isn't just a pro; he's a visionary who soared high in the military, honing his skills and expertise. He cut his teeth on heavy equipment and is now here to guide you to your next career milestone.


We're not just a local business; we're a community cornerstone. Our honesty and trustworthiness are legendary, and our reputation draws customers from every corner.


So, what are you waiting for? If you're ready to rev up your career, learn from the best, and be a part of a legacy, it's time to make the move. Tri-State Diesel Repair is where your journey begins. Apply now, and let's create a future full of diesel-driven accomplishments together!

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"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."