Mobile Diesel & Heavy Equipment Repair in Spotswood, NJ

Need a reliable mobile diesel mechanic in Spotswood, NJ? KS Diesel On-Site Repair provides fast, 24/7 on-site service for trucks, trailers, and heavy equipment no towing, no shop delays. From hydraulic leaks on Old Stage Road to engine issues off Route 18, we come directly to your location, ready to get you back up and running.

Trusted by local contractors, fleets, and municipal operators, we serve all of Spotswood from Main Street to Summerhill Road. Whether it’s diagnostics, welding, or emergency breakdowns, KS Diesel keeps your downtime low and your equipment moving.

About Us

Why Choose KS Diesel in Spotswood, NJ ?

We deliver expert-level mobile diesel repair, fully on-site, for Carteret’s contractors, fleets, and heavy equipment operators. No shops, no towing, no delays just fast, certified repairs exactly where you need them.

100% ON-SITE REPAIRS

100% On-Site Repairs – No towing, no waiting, no shop delays

24/7 EMERGENCY SERVICE

24/7 Emergency Service – Nights, weekends, and holidays, we’re on call

1-YEAR WORKMANSHIP WARRANTY

1-Year Workmanship Warranty – Welding, hydraulics, diagnostics fully backed

TRUCKS, TRAILERS & EQUIPMENT

Trucks, Trailers & Equipment – From reefers to backhoes, we fix it all

ASE-CERTIFIED TECHNICIANS

ASE-Certified Technicians – Skilled diesel mechanics, guaranteed work

Our Services

Our Mobile Diesel & Equipment Repair Services in Spotswood, NJ

We fix everything from semi-trucks and trailers to skid steers and excavators right on your job site, farm, or roadside in Spotswood.

Heavy Equipment Repair

We fix backhoes, excavators, skid steers, forklifts, and loaders right on job sites across Carteret. Hydraulic issues? Engine won’t start? We’ll get your machine running the same day.

Mobile Truck Repair

From no-starts to air leaks and engine issues, we handle it all where your truck is parked anywhere in Carteret. Quick response, expert repairs, no towing needed.

Roadside Assistance

If your semi or reefer trailer breaks down near the Turnpike or Roosevelt Avenue, we come fast. 24/7 emergency response for brake issues, battery jumps, and fuel delivery.

Line Boring

We bring mobile line boring services to Carteret job sites restoring worn bores on heavy equipment without shop downtime or costly transport.

Welding & Fabrication

Cracked frames, broken brackets, or quick metal fixes? We offer full on-site welding services anywhere in Carteret perfect for construction and fleet repairs.

Hydraulic Hose Repair

From burst hoses on cranes to leaking lines on loaders, we build and install custom hydraulic hoses on the spot day or night.

Diagnostics & Electrical Repair

We use advanced tools for Cummins, CAT, Detroit, and more. Whether it’s a check engine light or a fault code on a skid steer, we diagnose and fix it fast in Carteret.

PM Service (Preventative Maintenance)

Keep your fleet running with on-site PM service in Carteret. Oil changes, filter swaps, inspections, and DOT checks done for single trucks or full fleets.

Fleet Maintenance

Managing a fleet in Carteret? We offer scheduled service, emergency response, and full inspections to keep your trucks, trailers, and equipment in service.

Breakdowns happen anytime, and we respond anytime

24/7 Emergency Diesel Repair in Spotswood, NJ

Breakdowns don’t wait, and neither do we. Whether it’s 2 AM near Roosevelt Avenue or Sunday afternoon on the Turnpike, we respond fast across Carteret with on-site emergency repair. Common local breakdown scenarios include:

We Handle All Emergency Situations

We fix it all no towing, no shop delays, no hassle.

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 Spotswood, NJ

We support the working industries that power Spotswood and nearby towns:

Construction contractors with skid steers, loaders, and backhoes
Local and regional trucking fleets
Excavation companies working near Helmetta and Old Stage Road
Municipal fleets maintaining local infrastructure
Equipment rental companies near industrial parks

Whatever your job is we keep your machines working.

Gallery

Our Recent Works

Mobile Diesel Repair Near you

Neighborhoods We Serve in Spotswood, NJ

We serve all of Spotswood and the surrounding neighborhoods, including:

We serve Spotswood and all nearby neighborhoods within Spotswood, NJ

Mobile Diesel Repair in Spotswood, NJ

Request a Free Estimate

KS Diesel On-Site Repair is your mobile, 24/7, expert diesel mechanic in Spotswood, NJ. Whether you're facing air leaks, a dead starter, or a cracked hydraulic line, we’ll be there fast.