WHO WE ARE - Chandler’s Diesel Authority Built on Expertise and Trust
Copperhead Diesel Performance – Chandler’s Trusted Name in Diesel Engine Excellence.
Looking for a trusted diesel engine repair shop in Chandler, AZ? Copperhead Diesel Performance is a veteran-owned, full-service diesel engine repair shop serving Chandler and nearby cities since 2013.
- VISIT US:
- 145 E Highland St, Chandler, AZ 85225
- Mon–Fri, 7:00 AM – 5:00 PM
- OR CALL US:
- (480) 382-4211
Veteran-Led & Locally Rooted
Since its founding in 2013, Copperhead Diesel Performance has grown from a startup idea into Chandler’s premier diesel engine repair shop and performance center. Located at 145 E Highland St, Chandler, AZ 85225, we are deeply invested in our local community and pride ourselves on being a veteran-owned business with strong roots across Maricopa County. Our commitment to our customers and our craft has fueled our growth from a modest workspace to a 12,000-square-foot diesel repair facility serving a wide range of clients across Arizona.
BBB-Accredited Since 2018
We hold an A+ rating for our ethical business practices and service excellence.
Fully Accredited and Trusted
Consistent Quality
Every service reflects our high standards of craftsmanship.
Fair Pricing
Honest estimates and transparent billing set us apart.
Customer-First Service
We prioritize communication, clarity, and satisfaction.
Proudly Local
Active participants in Chandler’s network of skilled tradespeople and small businesses who value doing things right the first time.
Authorized Bosch Diesel Service Center
Copperhead Diesel Performance is proud to be an Authorized Bosch Diesel Service Center, reflecting our commitment to advanced diesel diagnostics, technical training, and professional repair standards. This authorization supports our ability to accurately diagnose and service modern diesel fuel systems, emissions systems, turbochargers, and drivability concerns using Bosch-supported technology and proven diagnostic procedures.
Purpose Built for Diesel Performance
Under the leadership of Sean Jaeger, our founder and manager, Copperhead has become more than a repair shop. We are a destination for diesel enthusiasts, hardworking tradespeople, fleet operators, and anyone looking for honest, high-quality diesel repair and performance upgrades. Our team specializes in everything from daily driver maintenance to full custom builds.
Transparent Communication
Communication is key to building trust, and trust is at the heart of everything we do. We believe in clearly explaining every service recommendation, providing honest timelines and estimates, and keeping our customers informed every step of the way. You deserve to understand your vehicle’s needs—and your options.
Diesel Performance with Integrity
Whether you’re seeking more power, greater reliability, or preventive care, our mission is to provide services that deliver real value. Every repair and upgrade is backed by our 3-year / 36,000-mile warranty, giving you peace of mind that the job was done right. We approach each project with discipline, precision, and a deep respect for our customers’ time and investment.
Continuous Improvement
Diesel technology is constantly evolving—and so are we. Our technicians undergo regular training and certification updates to stay current with the latest systems and standards, ensuring your truck benefits from industry-leading expertise.
Our technicians continue to stay current with evolving diesel technology through ongoing training and manufacturer-supported diagnostic education, including Bosch diesel service standards.
Our Mission – Honesty, Expertise & Diesel Excellence
We’re committed to delivering reliable diesel solutions with integrity, precision, and a customer-first mindset.
Comprehensive Diesel Repair & Performance Services
Full Suite of Diesel Offerings
We’re a one-stop diesel engine repair shop for diesel vehicles, offering services including:
Engine Diagnostics & Repair
Using dealer-grade tools and years of hands-on experience to diagnose and repair engine issues before they escalate.
Turbocharger & Fuel System Upgrades
Precision upgrades to maximize torque, power, and fuel efficiency.
Transmission & Drivetrain Work
From stock replacements to high-performance builds, we ensure your drivetrain is ready for real-world demands.
Preventive Maintenance
Oil changes, coolant flushes, fuel filter swaps, and system inspections to keep your diesel running clean and strong.
Electrical & HVAC Repairs
Diagnosing and repairing climate systems, alternators, batteries, and complex electrical issues.
Emissions & Fuel System Services
Including DPF cleaning, EGR and SCR system maintenance, and fuel injector service.
Fleet Program Support
Preventive maintenance and repairs for commercial vehicles with uptime and compliance in mind.
Digital Transparency
Every vehicle we service receives a full digital inspection—complete with technician notes and photos—so you can see exactly what’s happening under the hood. It’s part of our promise to deliver clarity and confidence.
Who We Serve – Diesel Owners Who Demand Quality
We proudly serve:
Local contractors who depend on work trucks every day
Fleet operators needing uptime and compliance
Off-road and diesel performance enthusiasts
Everyday diesel drivers who value longevity and trust
Whether you haul loads for a living or drive a tuned Duramax for weekend fun, our diesel engine repair shop delivers solutions tailored to your vehicle’s demands and your goals.
Meet the Owner
Sean Jaeger: Veteran, Founder, Diesel Authority
Sean Jaeger is a U.S. Army veteran and diesel expert who founded Copperhead Diesel Performance after his military service. Starting in a modest rented space in 2013, he built the company from the ground up with a focus on honest service, technical skill, and long-term customer relationships. Today, Sean leads a growing team of diesel professionals, ensuring that every truck meets Copperhead’s standards for workmanship, reliability, and performance.
He remains hands-on in daily operations, overseeing complex builds, mentoring new technicians, and maintaining the same mission-driven approach that made Copperhead a name drivers trust.
Recognized for Excellence – Awards, Features & Reviews
At Copperhead Diesel Performance, our work speaks for itself—and so do our customers and industry partners.
BBB Accredited with A+ Rating
We’ve been proudly accredited by the Better Business Bureau since 2018, maintaining an A+ rating thanks to our transparent practices, ethical standards, and consistently positive customer feedback.
Featured by Banks Power
Copperhead was selected for a Dealer Spotlight by Banks Power, one of the most respected names in diesel performance. This feature highlighted our growth, craftsmanship, and dedication to customer service—reinforcing our standing as a top-tier diesel shop in Arizona.
Highly Rated by the Community
With a 4.7-star rating on Birdeye and 4.8 stars on the Chamber of Commerce, hundreds of local customers trust Copperhead Diesel for quality repairs, fair pricing, and personalized service. These reviews reflect our core values: honesty, precision, and long-term support for every diesel owner we serve.
Why Diesel? Education and Empowerment for Owners
We believe education is empowerment. That’s why we help every customer understand their diesel engine’s strengths, maintenance needs, and upgrade potential.
The Diesel Advantage
Diesel vehicles deliver exceptional torque, fuel efficiency, and engine life—especially when properly maintained. Whether you use your truck for towing, hauling, work, or weekend performance, diesel engines provide the power and reliability to do it all. Our team is here to explain complex systems like diesel particulate filters (DPF), selective catalytic reduction (SCR), turbochargers, and more—so you can make informed decisions that extend your engine’s life and optimize performance.
Built to Last
With correct service intervals and quality parts, diesel engines can easily surpass 300,000 miles of reliable service. Our job is to make sure your engine reaches that milestone and beyond.
Built for the Road Ahead – Let’s Drive Forward Together
Copperhead Diesel Performance is more than a diesel engine repair shop. It’s a place where honesty, experience, and customer-first service come standard. We’re proud to support the diesel community across Chandler, Gilbert, Mesa, Tempe, and Phoenix with repairs and upgrades built to last.
If you’re ready to experience diesel service done right, you’ll find a partner in us.