Semi Truck Repair.Shop or Roadside.
Family-owned semi truck repair in Sumner, WA — diesel engine repair and rebuilds, DPF cleaning and emissions work, transmission and driveline. Bring it to the shop, or a mobile diesel mechanic comes to your yard or the roadside anywhere across Greater Seattle. And when you want more than a repair: full custom truck builds, 500 to 1,200 hp engine builds, engine swaps, air ride and flooring, under the same roof.
- Family-owned & operated
- Shop + mobile service
- Repair & custom builds
- Family
- Owned & operated
- Shop + Mobile
- Two ways to get fixed
- 500–1,200 HP
- Custom engine builds
- Greater Seattle
- Service area
Semi truck repair that keeps you earning
Three core services that cover the work that keeps your truck on the road — from the shop floor to the roadside.
Build the truck you actually want
The same shop that fixes semi trucks builds them from the frame up: custom engine builds from 500 to 1,200 horsepower depending on application, engine swaps, custom air ride kits, custom flooring, and full one-off builds where all of it comes together under one roof.
Filmed in our Sumner shop · a build in progress
A repair partner, not a parts counter
Owner-operators and fleets choose us because we treat uptime as the job — not an afterthought. Trustworthy shop repairs, the flexibility of mobile service, and people who actually answer the phone.
Family-Owned & Accountable
You deal with the people who own the shop. Honest assessments, fair pricing, and repairs we stand behind — not a corporate service desk.
Heavy-Duty Specialists
Experienced diesel technicians handling complex engine, emissions, and driveline work with OEM-grade parts and precision machine work.
Repair and Custom, One Shop
The crew that rebuilds your engine is the crew that builds custom trucks — from 500 to 1,200 hp engine builds to full frame-up builds.
Greater Seattle Coverage
Based in Sumner with mobile units serving owner-operators and fleets across the South Sound and the wider Seattle metro.
From breakdown to back on the road
Call or request a quote
Tell us the truck, the symptoms, and your timeline. We respond with straight answers — no runaround.
Diagnose — shop or on-site
Bring it to Sumner or we roll a mobile unit to you. We pinpoint the real problem before parts get ordered.
Repair done right
Quality work with OEM-grade components and a clear scope, so the fix holds and the surprises stay off your invoice.
Back on the road
We get you rolling fast and keep records that make the next service — and your fleet planning — easier.
Proudly serving Greater Seattle
Our Sumner shop and mobile units keep semi trucks moving across the South Sound and the wider Seattle metro. If you run a truck here, we can help.
- Sumner
- Puyallup
- Tacoma
- Fife
- Auburn
- Kent
- Federal Way
- Renton
- Seattle
- Bellevue
Frequently asked questions
Quick answers to what owner-operators and fleet managers ask us most. Don't see yours? Call us — we're happy to talk it through.
What types of trucks and engines do you work on?
We specialize in heavy-duty commercial trucks and diesel engines — the tractors, straight trucks, and fleet vehicles that businesses depend on. Our technicians focus on commercial diesel equipment, from major engine work to emissions systems and roadside repairs.
Do you do custom semi truck builds?
Yes. Our Sumner shop does full frame-up custom builds as well as the individual pieces: custom engine builds from 500 to 1,200 horsepower depending on application, engine swaps, custom air ride kits and custom cab and sleeper flooring. Everything is planned together and built by the same crew.
Do you offer mobile or roadside repair?
Yes. Our mobile units bring diagnostics and emergent repairs to your yard or the roadside across the Greater Seattle area, cutting towing time and getting drivers moving again fast.
Can you service DPF and emissions systems?
Absolutely. We provide DPF cleaning and flow testing, aftertreatment and DEF diagnostics, forced regen and derate resolution, and EGR/SCR/sensor repair to keep your trucks compliant and out of derate.
What areas do you serve?
We're based in Sumner, WA and serve the Greater Seattle area and the wider South Sound, including Sumner, Puyallup, Tacoma, Fife, Auburn, Kent, Federal Way, Renton, Seattle, Bellevue. If you run commercial trucks in the region, we can help.
How do I get a quote?
Call us at (206) 304-6870 or send a message through our contact form. Tell us the truck, the symptoms, and your timeline, and we'll respond with a straight answer and a fair quote.
Ready to reduce downtime?
Get a straight answer and a fair quote from technicians who treat your rig like it carries our name.