Maryland Diesel & Fuel Injection LLC (MDFI) was built on experience, integrity, and a deep respect for the legacy that shaped today’s diesel industry.

Our team’s roots trace back to the former JG Parks & Sons fuel injection shop — a place where precision, craftsmanship, and accountability defined the standard. It’s where Darryl Price spent nearly two decades mastering his craft and building relationships with customers who still value that same level of quality today.

When that chapter of the industry closed, Darryl and Lindsey Price decided it was time to take everything learned over those years and build something new. MDFI was founded to carry forward that same dedication to accuracy, professionalism, and service.