Coolant leaking or engine running hot? Don’t risk an expensive breakdown. We repair radiators, water pumps, thermostats, and more to keep your truck’s cooling system running strong.

Coolant System Repair in Moses Lake, WA
Your engine generates intense heat—and without a working cooling system, that heat can destroy vital components fast. We offer expert cooling system repair for trucks, trailers, RVs, buses, and heavy equipment. Whether you’re dealing with a slow leak or an overheating engine, we’ll find the fix.
Common coolant system repairs include:
- Semi truck radiator repair
- Water pump and thermostat replacement
- Coolant flush and pressure testing
- Hose and coolant line replacement
- Fan clutch and heater core repair
What Makes Us Different
509 Roadside isn’t your average diesel shop. We’re equipped to handle a wide variety of heavy-duty vehicles, whether it's a long-haul truck, a charter bus, or heavy equipment. Every coolant system repair is done with precision and speed to minimize downtime.
- In-shop service for trucks, RVs, trailers, buses, and fleets
- Roadside assistance available during business hours
- Honest timelines and transparent estimates
Need us on the road? Our mobile service team can assist during weekdays for breakdowns and scheduled on-site repairs. If you’re stuck and need help, 509 Roadside has you covered with 24/7 roadside assistance.
FAQs
How Can I Get Coolant System Repair?
Call 509-855-4932 now to book a service appointment. Whether it’s a leaking radiator or a bad thermostat, we’ll get your cooling system working reliably again.
Can I Still Drive With a Coolant Problem?
Driving with a coolant leak or failing component is risky. Without proper cooling, engine temperatures can spike quickly, leading to major damage. It's best to stop and have the system inspected as soon as possible.
What Are the Common Signs of a Malfunctioning Cooling System?
Look out for overheating, coolant leaks, steam from the hood, or fluctuating temperature readings. You might also notice a drop in heater performance or a sweet smell under the hood—both signs of trouble.
What Areas Do You Serve For Coolant System Repair?
We’re located at 11969 Debonair Street Northeast, Moses Lake, WA. We also proudly serve Spokane, WA; Kennewick, WA; Pasco, WA; Richland, WA; Yakima, WA; Wenatchee, WA; and Ellensburg, WA.
Schedule Your Coolant System Repair Now: Call 509-855-4932!
Overheating problems don’t fix themselves. Call 509-855-4932 to schedule your radiator or coolant system repair today. We'll get your truck back to peak performance—fast.
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!
Totally helped me out of a jam. Last Wednesday 2/26/25 late in the day, my 2011 Isuzu Blue Bumper Box truck had a red check engine light go off. You guys were my angels. Thanks so much for clearing the code and getting my truck back on the road. It made it all the way to Spokane and back to Seattle.
Our resident transport bus broke down on the way back from Wenatchee. 509 Roadside made arrangements to get the vehicle towed to the shop and had it fixed the very next day. Great service!
509 Roadside is amazing. I was driving my truck and was in the area with an airbag broken on my trailer. I called 7 different shops within 100 miles of Moses lake around 1pm on a Thursday 3/13/25 and 509 was the only one to answer. Not only did they answer but they took the time to find the correct airbag and get me safely back on the road at a very reasonable price! It was a great experience and I will definitely be using their services again if I’m ever in need.
Came in for an issue, fixed extremely quick. The most honest mechanics ive seen in a long time. Will definitely be coming back for any future issues!
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.
509 Roadside saved my day. I locked my keys in my trunk and called insurance to have them help connect me with someone to get into my car. I was waiting for the maintenance truck to come, 2.5 hours after my call. 509 Roadside was just driving by and helped. Super nice guy!
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!
Joseph helped me out when my car couldn’t shift gears coming from Spokane, going back to Western WA. It was 99 degrees out and he came from his house to help me. He was calm, knowledgeable, communicated well, and honest. He even called me when I got back home to make sure I made it and gave me some car tips. There aren’t too many people out there like him. I believe in karma, and Joseph deserves all the best karma his way.
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!