New Jersey On-Site Diesel Repair

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Truck and Machine Repairs

On-Site Diesel Repair’s mobile truck mechanic provides a full range of diesel repair and maintenance services for your truck, fleet, or other heavy machinery.

We use dealer-level diagnostic software to accurately identify the cause of your vehicle trouble. With the latest diagnostic and programming software for all makes and models, our mobile mechanic can confidently identify the diesel repair you need instead of guessing.

Our mobile repair truck is stocked with replacement trailer tires, fuel filters and more. Our skilled welders can perform custom reconstructions.

NJ Road Service Available 24 Hours A Day

We offer roadside emergency diesel repair 24 hours a day in Central NJ and the surrounding areas. We come to you. With 24/7 on-site road service, a fully-equipped truck and honest work, we’ll get finish your truck repair and running in no time! On-Site Diesel Repair is the most reliable mobile truck mechanic in New Jersey.


Read more testimonials about our diesel repair service on Google and Facebook

Jeff Y

Very professional, extremely accommodating, good rates, would recommend to anyone. Will become our main mechanic. Great story from other day. One of our trucks had an issue broke down on the side of the road. My partner called Joe and Joe got there even before i did, fixed the truck right there on the spot and we were rolling again in less then 30 mins.

Profecosafe Pest Control

Talk about great, fast, high quality service! This is the place to go, or better yet they come to you! Joe did a fantastic job repairing our vehicle. Highly recommend On-Site for all your diesel repairs.

Eric T

Had a question about my truck, Joe showed up not even 30 minutes later. Very happy, resting easy now. Will definitely use On-Site for future problems.


Shop Open

MonFri: 7:00 am – 10:00 pm
Sat: 8:00 am – 3:00 pm
Sun: closed

Call 24/7 for appointment or emergency repair

Contact Joe