Mobile Diesel & Heavy Equipment Repair in Piscataway, NJ

KS Diesel On-Site Repair brings 100% mobile diesel, truck, and heavy equipment repair to Piscataway and all of Middlesex County 24/7. Whether you’re stuck on Route 287 or broken down near River Road, we come to you with fast, dealership-grade service.

From Centennial Industrial Park to job sites off Stelton Road and Possumtown Road, we keep Piscataway’s contractors, fleets, and municipalities moving without the tow.

About Us

Why Choose KS Diesel in Piscataway, NJ ?

We deliver expert-level mobile diesel repair, fully on-site, for Piscataway’s contractors, fleets, and equipment operators. No shops, no towing, no delays just fast, certified repairs at your location.

100% ON-SITE REPAIRS

All repairs are done at your location. No towing, no waiting, no shop delays.

24/7 EMERGENCY SERVICE

Breakdowns don’t wait. We’re ready nights, weekends, and holidays with fast on-site response.

1-YEAR WORKMANSHIP WARRANTY

Every repair is backed by our full 1-year warranty welding, hydraulics, diagnostics, and more.

TRUCKS, TRAILERS & EQUIPMENT

We service diesel trucks, trailers, reefers, heavy equipment, and fleet vehicles of all types.

ASE-CERTIFIED TECHNICIANS

Repairs are performed by skilled, experienced, ASE-certified diesel mechanics guaranteed.

Our Services

Our Mobile Diesel & Equipment Repair Services in Piscataway, NJ

We bring the full shop to your site. Whether you’re broken down near Main Street, at a construction zone, or parked in a fleet yard off Route 202, we get you back to work, fast.

Heavy Equipment Repair

We fix loaders, excavators, skid steers, backhoes, and forklifts right at your job site in Piscataway. From hydraulic failures to no-starts, we come to you same day.

Mobile Truck Repair

Truck down near Route 287 or Stelton Road? We handle engines, air leaks, no-starts, and electrical failures on the spot anywhere in Piscataway.

Roadside Assistance

If your semi or reefer is stuck near Possumtown Road, we respond 24/7 with jump starts, air/fuel leak fixes, brake repair, and emergency dispatch.

Line Boring

We offer on-site line boring in Piscataway for worn bores on heavy equipment saving you the cost and delay of shop downtime.

Welding & Fabrication

Need frame welding or custom brackets in Piscataway? We bring full mobile welding capabilities to your site fast.

Hydraulic Hose Repair

Blown hydraulic line on a job off Hoes Lane or River Road? We crimp and replace hoses on-site even after hours.

Diagnostics & Electrical Repair

We run advanced diagnostics for CAT, Cummins, Detroit, and more. Whether it's a no-start or check-engine light, we diagnose and fix it fast.

PM Service (Preventative Maintenance)

Keep your fleet in top shape with mobile PM in Piscataway. We handle oil changes, filters, inspections, and DOT-compliant service for all vehicles.

Fleet Maintenance

Managing a fleet in Piscataway? We offer scheduled inspections, service logs, and fast response repairs for trucks, trailers, and heavy equipment.

Breakdowns happen anytime, and we respond anytime

24/7 Emergency Diesel Repair in Piscataway, NJ

When your truck, trailer, or backhoe goes down time is money.

We Handle All Emergency Situations

Our local team knows Piscataway roads and sites. We get there fast day or night.

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!!!!!!