About Us
About SWP Diesel Performance
SWP Diesel Performance is a Wyoming-based diesel repair and performance shop built on honesty, transparency, and doing the job right the first time. We specialize in real diagnostics, real repairs, and real solutions — not guesswork.
Our Approach
Diagnostics First. Repairs That Last.
Too many diesel shops replace parts without understanding the real problem. We start with in-depth diagnostics, document what we find, and explain it clearly before any work begins.
- No unnecessary parts replacement
- Clear communication and estimates
- Repairs focused on long-term reliability
Experience You Can Trust
Built Around Diesel
Our shop focuses heavily on Cummins, Duramax, and Power Stroke platforms. From drivability issues and major engine repairs to performance upgrades and accessories, diesel trucks are what we do every day.
- Cummins, Duramax & Power Stroke specialists
- Cab-off engine repairs
- Transmission & drivetrain work
Our Facility & Parts Inventory
Local Parts. Faster Turnaround.
We maintain an in-house diesel parts and accessories inventory right here in Casper, Wyoming. That means fewer delays, faster repairs, and better control over the quality of parts installed.
- In-house diesel parts inventory
- Lift kits, accessories, and upgrades
- Fleet and work-truck support
Work With a Shop That’s Accountable
Whether you need diagnostics, repairs, performance work, or accessories, SWP Diesel Performance is committed to doing it right and standing behind our work.