Mobile Diesel & Heavy Equipment Repair in Dunellen, NJ

Stuck on Route 28 with a broken-down diesel or equipment failure on a Dunellen job site? KS Diesel On-Site Repair brings fast, 100% mobile diesel and heavy equipment service right to your location no towing, no downtime. We handle trucks, trailers, construction equipment, and fleet vehicles across Dunellen, NJ with expert on-site repair, 24/7.

Dunellen sits at the center of key trucking and construction routes like North Ave, Washington Ave, and nearby I-287. Whether you’re dealing with a breakdown near Lincoln Middle School, a stalled semi on New Market Road, or hydraulic failure at a job site off Prospect Ave we’re on it.

About Us

Why Choose KS Diesel in Dunellen, NJ ?

We deliver fast, on-site diesel repair right where Dunellen’s crews and fleets need it no towing, no downtime. From roadside breakdowns to job site fixes, we keep your equipment running and your day on track.

100% ON-SITE REPAIRS

We bring the shop to you anywhere in Dunellen. No hauling, no waiting, just fast mobile service.

24/7 EMERGENCY SERVICE

Whether it’s a weekend job site or a late-night breakdown, we’re always ready to roll.

1-YEAR WORKMANSHIP WARRANTY

Our workmanship is guaranteed for a full year covering welding, diagnostics, hydraulics, and more.

TRUCKS, TRAILERS & EQUIPMENT

From semi trucks and trailers to loaders and excavators we fix it all, right on-site.

ASE-CERTIFIED TECHNICIANS

Our experienced diesel mechanics are ASE-certified and job-ready for any repair, anytime.

Our Services

Our Mobile Diesel & Equipment Repair Services in Dunellen, NJ

We handle every major repair category, just like our Bound Brook base now fully localized for Dunellen’s job sites, roads, and commercial yards.

Heavy Equipment Repair

We fix excavators, skid steers, backhoes, and loaders on job sites across Dunellen. From busted hydraulics to no-starts, we come to you and get your machine back to work.

Mobile Truck Repair

Breakdown on Route 28 or North Ave? Our mobile team handles diesel truck and trailer repairs on-site engine issues, air leaks, or electrical faults we fix it all.

Roadside Assistance

Stuck at the Dunellen Train Station or on New Market Rd? We provide 24/7 roadside help jump starts, fuel delivery, lockouts, brake issues, and more.

Line Boring

Precision on-site line boring for worn-out bores in loaders, excavators, and forklifts. We save you time and cost by coming directly to your Dunellen site.

Welding & Fabrication

From frame cracks to quick bracket builds, we weld on-site anywhere in Dunellen. Stick, MIG, or TIG we’ve got it handled.

Hydraulic Hose Repair

Leaking line near Columbia Park? We carry and crimp custom hoses on the spot day or night.

Diagnostics & Electrical Repair

Check engine light? Fault code on your loader? We bring advanced diagnostic tools to your location and solve the issue on-site.

PM Service (Preventative Maintenance)

Oil changes, filter swaps, brake checks done at your job site or yard in Dunellen. Keep your trucks and gear running longer.

Fleet Maintenance

We help Dunellen businesses manage their fleets with scheduled service, inspections, and 24/7 repair. Construction, delivery, or municipal we handle it all.

Breakdowns happen anytime, and we respond anytime

24/7 Emergency Diesel Repair in Dunellen, NJ

Breakdowns don’t wait. Neither do we. KS Diesel is on call 24/7 for diesel emergencies across Dunellen. Whether you’re broke down near Dunellen Station, stuck off Orange Street, or sidelined along North Avenue, we’ll get to you fast.

Common Emergency Repairs We Handle in Dunellen:

We Handle All Emergency Situations

We arrive fast. Fix on-site. Get you moving.

What Our Customers Say

TESTIMONIAL

      EXCELLENT  
   Based on 30 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Howard Mcnabb 
 
 
 
 Trustindex verifies that the original source of the review is Google. I was stuck on 202  from last night and Kevin came and got me up and running this morning. And his prices  are reasonable .I would definitely go with him again
  
 
      Posted on Google  
   
   Nicholas Dessauer 
 
 
 
 Trustindex verifies that the original source of the review is Google. Kevin is a absolute amazing Mechanic!!!! We were coming back to Long Island fromKY and the Fan pulley went out on our 3500 diesel truck and he was able to get the parts and fix the truck and have us back on the road in very quick way. Excellent service and communication. Price was very reasonable and for a same day call and fix he did an Outstanding Job!!! Thank you again Kevin we appreciate you so much!!!!
  
 
      Posted on Google  
   
   Karam Bains 
 
 
 
 Trustindex verifies that the original source of the review is Google. I am from canada and got problem on my Columbia with Cat c15, twin turbo And looked for mobile service and got in touch with KS diesel in NJ he is the best guy I have ever met for mobile service , very much knowledgable and cool headed , not greedy Would recommend this guy to everyone, if you got any problem in Somerset NJ area call this guy 10/10 for price 10/10 problem solver
  
 
      Posted on Google  
   
   Eric Karstensen 
 
 
 
 Trustindex verifies that the original source of the review is Google. Kevin is the best. Fast excellent work. Great on the road mechanic. Best prices around! Nice guy. Would recommend for all truck repairs. A++
  
 
      Posted on Google  
   
   Danny Guerrieri 
 
 
 
 Trustindex verifies that the original source of the review is Google. Awsome
  
 
      Posted on Google  
   
   ibrahim elhabbal 
 
 
 
 Trustindex verifies that the original source of the review is Google. Trust worthy, honest, genuine and very hard working. What else do you need from your mechanic. Always answers right away and gives you best recommendations!!!!!!

Industries We Serve in Dunellen, NJ

We support key industries keeping Dunellen moving:

Construction Companies: On-site repair for excavators, backhoes, dump trucks
Fleet Operators: Local delivery, hauling, and utility fleets
Excavation & Site Contractors: Field repairs for loaders and trenchers
Municipal Crews: Sanitation, plow, utility, and street service vehicles
Equipment Rental Yards: Fast repair to keep your fleet rented and running

We know Dunellen’s job sites, roads, and fleets and we keep your operation moving.

Gallery

Our Recent Works

Mobile Diesel Repair Near you

Neighborhoods We Serve in Dunellen, NJ

We proudly serve all areas in and around Dunellen, NJ, including:

No matter where your truck or machine breaks down in Dunellen, we come to you fast, fully equipped, and ready to fix it.

Mobile Diesel Repair in Dunellen, NJ

Request a Free Estimate

Need fast, local, reliable diesel repair? KS Diesel On-Site Repair is your go-to mobile diesel mechanic in Dunellen, NJ. From job sites to roadways, we bring the tools, techs, and experience to fix your truck or equipment right where it sits.