Heavy-Duty Engine Repairs and Services in Phoenix, AZ
If your engine is losing power, burning oil, or throwing codes, it’s time for a professional evaluation. At Complete HTR, we perform everything from minor engine repairs to full overhauls and conversions on heavy-duty trucks, RVs, buses, fleets, and construction equipment. Whether you’re dealing with cylinder damage, sensor failure, or a complete engine breakdown, we deliver precise service built around your needs.
We offer:
- Engine diagnostics, repairs, and in-frame rebuilds
- Out-of-frame engine overhauls and reman installs
- Cylinder head, piston, and valve replacements
- Turbocharger, EGR, and fuel system repairs
- Engine conversions and repowers (OEM and custom configurations)
All work is performed by certified technicians using top-tier components and OEM-level tools to ensure durability and performance.
Why Choose Us?
At Complete HTR, we approach every engine service with precision and care—whether it’s a simple repair or a full rebuild.
- Full-service diesel engine repair in-shop for all Class 6–8 vehicles and equipment
- Overhaul packages tailored to meet budget, performance, or compliance goals
- OEM diagnostics and reman installation capabilities
- Engine conversions for specific applications or upgrades
- Service available for Cummins, CAT, Detroit, International, and other major platforms
- Clean customer lounge with coffee and optional pick-up/drop-off service
We’re equipped to handle complex engine jobs with speed, accuracy, and a focus on long-term reliability.
Mobile Services and Roadside Assistance Within 50 Miles
Complete HTR offers limited mobile engine diagnostics and inspections within a 50-mile radius of Phoenix, AZ. If your truck is down and can’t make it in, our mobile team can assess the issue and help coordinate towing and shop repair services.
Schedule Your Engine Repair Now: Call 623-745-5896!
Whether you need a small repair or a complete rebuild, call 623-745-5896 now to schedule your engine service with Complete HTR. We look forward to hearing from you.
FAQs
What Areas Do You Serve?
We are located at 2450 S 7th Street Phoenix, AZ 85034 off the I-17 and 7th Street. We also proudly serve the greater Phoenix area, including Tempe, Glendale, Mesa, Scottsdale, Chandler, and more.
What Is the Difference Between an Engine Repair and an Overhaul?
Repairs address individual failing components, while an overhaul involves rebuilding key internal parts to restore the engine to near-new condition. Overhauls are typically recommended when multiple components are worn or failed.
What Are the Signs That My Engine Needs a Rebuild?
Loss of power, high oil consumption, knocking noises, smoking, or repeated check engine lights can all indicate the need for a rebuild. A diagnostic inspection will determine whether repair or overhaul is the best option.
How Can I Get in Touch?
Call 623-745-5896. We’ll schedule your engine repair, rebuild, or conversion—either at our Phoenix shop or arrange mobile diagnostics if you're within 50 miles.
Don't Take our word for it.
Read Customer Testimonials.
"Great reliable truck repair and mobile work. Ivan and Adrain great service guys."
"Amazing customer service, fair pricing and quick in and out. Called first, made a same day appointment, was out in about 5 hours. I definitely recommend them for the truck driver in need of service."
"Had DEF pump replaced on one of our Freightliner Cascadias. Service was fast, friendly and very economical. Will recommend to others. Small but Great place who will treat you right!"
Contact Us
Let us know what is going on with your vehicle, and we will get back to you soon with a quote.