Mobile Diesel & Heavy Equipment Repair in Alexandria, NJ

Looking for a diesel mechanic near you in Alexandria? KS Diesel On-Site Repair brings same-day and emergency service directly to your site or roadside.

Whether you’re down near Route 513 or need fleet repairs near the Everittstown Historic District, we respond fast.

About Us

WHY CHOOSE KS DIESEL IN Alexandria, NJ?

Here’s your full intro and bullet points, styled to match the format in your image, with bold headings, supporting text underneath, and visual clarity:

100% ON-SITE REPAIRS

All repairs are done at your job site, roadside, or fleet yard. No shop delays or towing required.

24/7 EMERGENCY SERVICE

We are always on call in Alexandria. Day or night, we respond fast.

1-YEAR WORKMANSHIP WARRANTY

Our work is backed by a full 12-month guarantee. Quality repairs you can trust.

DIESEL EQUIPMENT EXPERTS

We service diesel trucks, trailers, semi trucks, heavy equipment, and fleet vehicles with precision.

ASE-CERTIFIED TECHNICIANS

Skilled, experienced, ASE-certified diesel mechanics handle every repair, guaranteed.

Our Services

Our Mobile Diesel & Equipment Repair Services in Alexandria, NJ

Wherever your equipment breaks down in or around Alexandria, we deliver the same high-quality service you expect from a top diesel repair shop, without the need for a shop. Every service is performed on-site at your location or roadside.

Heavy Equipment Repair

We repair excavators, skid steers, backhoes, and loaders across Alexandria. From hydraulic failures to engine issues, we get your machines running fast right on-site.

Mobile Truck Repair

We fix diesel trucks of all sizes, including semis and reefers. Whether you're on Route 513 or a farm road, we deliver expert repairs for brakes, suspension, engines, and more.

Roadside Assistance

Stuck on Pittstown Road or near Little York? Our roadside techs come to you fast to handle fuel issues, dead batteries, and urgent diesel breakdowns right where you are.

Line Boring

We restore worn bores in excavators and loaders on your site. Our line boring service helps you avoid costly part replacement by restoring original specs in the field.

Welding & Fabrication

We handle mobile welding jobs from cracked frames to custom attachments. Our on-site fabrication keeps your equipment moving without waiting on a shop.

Hydraulic Hose Repair

We custom cut, crimp, and install new hydraulic hoses on-site in Alexandria. No waiting, no trailering, just fast fixes where you’re working.

Diagnostics & Electrical Repair

We plug in, scan, and diagnose your diesel engine problems on the spot. From fault codes to electrical issues, we find the issue fast and fix it right.

PM Service (Preventative Maintenance)

Our PM service includes oil changes, inspections, and filter swaps at your location. Keep your trucks and machines running longer with scheduled on-site service.

Fleet Maintenance

We manage diesel fleet service for Alexandria businesses. Stay compliant, stay running, and avoid breakdowns with custom maintenance plans that come to you.

Breakdowns happen anytime, and we respond anytime

24/7 Emergency Diesel Repair in Alexandria, NJ

Breakdowns don’t keep office hours, and neither do we.

If you’re stuck on Route 579, on a back road near Little York, or even deep into Mechlin Corner, call us any time of day or night. We fix:

We serve Alexandria’s contractors, farmers, excavators, haulers, and fleet managers 24 hours a day, 7 days a week. We know your job can’t wait.

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!!!!!!