Diesel Repair in Moses Lake
From diesel engine repairs to suspension, 509 Roadside in Moses Lake, WA, handles it all. We repair trucks, trailers, RVs, buses, and heavy equipment—fast, reliable, and always professional.

Our Repairs
At 509 Roadside, we specialize in comprehensive diesel and commercial vehicle repair. Whether you’re dealing with engine trouble, axle issues, or air system leaks, our techs are equipped to handle every system on your rig. We work on all makes and models of trucks, trailers, RVs, buses, automobiles, and heavy equipment—on the road or in our shop.
FAQs
What Types of Vehicles Do You Repair?
We service semi trucks, trailers, RVs, buses, light-duty pickups, automobiles, and heavy equipment. No matter what you drive, if it runs diesel or supports commercial work—we can fix it.
Do You Handle Mobile Repairs?
Yes, we offer mobile repair for most systems including diagnostics, electrical, brakes, air lines, and more. We also provide scheduled on-site repairs during regular weekday service hours.
What Engine Repairs Do You Offer?
We provide diagnostics, rebuilds, overhauls, oil leak repair, fuel system service, and more. Whether it's performance loss or a major failure, our team can restore your diesel engine.
Can You Fix Electrical Problems?
Absolutely. We handle wiring issues, starter failures, battery problems, alternators, and full electrical diagnostics. If your truck won’t start or you’re chasing electrical faults, we’ll track it down.
Do You Service Suspensions?
Yes. We repair leaf springs, shocks, air ride systems, and bushings. If your ride feels off or your trailer sags under load, we’ll inspect and fix the issue fast.
Do You Handle DOT-Related Repairs?
We do. If your truck failed a DOT inspection or needs repair to pass one, we’ll take care of the lights, brakes, tires, suspension, and anything else needed for compliance.
Do You Repair Cooling Systems?
Yes. We handle coolant leaks, radiator replacements, thermostat service, water pumps, and more. If your truck is running hot, we’ll get it cooled down fast.
Contact Us
Need reliable truck or trailer repair? Call 509-855-4932 today to schedule service. Whether you're on the road or in the yard, 509 Roadside will get you fixed up and rolling again.
What They're
Saying About Us
See why our customers consider 509 Roadside their go-to repair shop in Moses Lake, WA and the surrounding areas!
I am a hostler driver in our yard and anytime I need repairs, I call on 509 roadside, they haven't disappointed me at all. Very professional and courteous, I strongly recommend them.
509 Roadside put in a left foot pedal, brand new brakes, and rotors and rear drums on my car. Also checked all fluids and cleaned engine bay. They were fast, friendly, and went way above and beyond for me. I would give these guys 20 stars if I could!
My window wasn’t working for the past 2 years and I was looking for a good mechanic for a while but they were too pricey. But 509 roadside did not disappoint! They were able to fix my window at a great price! Definitely recommend!! I can finally go through the drive through!
Joseph and the 509 Roadside crew have been an invaluable part of keeping our fleet of delivery trucks running reliably here at Culligan, and it has been great having such a fantastic, local mechanic. He is consistent, thorough and always goes the extra mile to ensure our vehicles are in excellent condition. His attention to detail and commitment to quality work are evident in every job he takes on. Knowing we can count on him for fast, dependable service makes all the difference in keeping our operations on schedule. Very highly recommended for all your fleet needs!
Had my starter go out they had a new on hand and I was back on the road right at 2 hours, great job 509.
Had issue with semi shutting down due to coolant level issue, contacted 509 to assist and they were earlier then expected, very friendly and got me back on the road quickly and went beyond duty and even checked other things to prevent any other issues. Would call them first if I ever have a problem down road.
I started using 509 Roadside in 2023 and I can’t say enough good things about Joe and his team. They provide prompt and professional repair services for my equipment at very reasonable rates. Since my office is based outside of the region where 509 Roadside is located, they are a strategic resource for my equipment service needs.
I can’t speak highly enough of the service I received from 509 Roadside. My F150 was throwing multiple error codes and knocking, and eventually stranded me off I90 on a Sunday afternoon. Joseph with 509 was extremely patient and attentive, and helped walk me through problem solving over the phone, and I was able to get back on the road. (For a bit, but that’s the truck’s fault and not theirs!) Five stars, and I’d give more if I could.
Contact 509 Roadside
Need roadside assistance, have questions, or want to schedule your truck or trailer in for a service or repair? Get in touch!