DDP

About Dynomite Diesel Products (DDP)

Dynomite Diesel Products — widely known by the initials DDP — has built its reputation on one singular focus: engineering the most precisely built diesel fuel injectors on the market. Founded around 2000 as a fuel injection supply and repair company in Washington State, DDP has evolved into a dedicated injector modification and manufacturing operation now headquartered in Hayden, Idaho. Under the continued ownership of founder Lenny Reed, the brand has grown from a small shop into one of the most recognized names in diesel performance fueling.

Precision Engineering at the Core

What separates DDP from the broader aftermarket is its commitment to tolerances that go beyond what many competitors — and even original equipment manufacturers — achieve. Rather than relying solely on standard Electro Discharge Machining (EDM), DDP employs a proprietary honing process on every nozzle. This process removes imperfections, polishes the internal passages, and radii the fuel-flow holes to promote better atomization. The practical result is cleaner combustion: less exhaust smoke, lower exhaust gas temperatures (EGTs), and more usable power delivered to the wheels.

Every injector set that leaves the DDP shop is matched and balanced as a complete set, with flow variance held to tighter tolerances than OEM specifications. Bore scopes are used to inspect injectors at the micron level — a level of detail that is simply invisible to the naked eye. This meticulous process is the foundation behind product lines like the Patriot Series™ remanufactured injectors, the performance-oriented Super Mental Series, and fully custom-built race injectors built to each customer's exact power goals.

Coverage Across All Major Diesel Platforms

DDP's fuel injector lineup spans decades of diesel truck applications. Coverage includes the Dodge Ram / Cummins platform from 1989 through the current 6.7L generation, the Chevy/GMC Duramax family from the original LB7 through the modern L5P, and the Ford Power Stroke lineup across multiple engine generations. Whether a diesel owner needs a stock-replacement injector for a daily driver, a mild performance upgrade for towing duty, or a full competition build capable of four-figure horsepower, DDP offers tiered options to match.

Beyond injectors themselves, DDP also offers injector nozzle sets, CP3 and CP4 injection pumps, fuel system components, and custom injector modification services — including injector testing for customers who want their existing cores evaluated and upgraded rather than replaced outright.

Core Return Program and Support

DDP operates a core return program for remanufactured components. Once an acceptable core is received back, customers receive a credit or refund — typically within a few weeks of receipt. The brand also supports its products with detailed installation guides and a network of authorized dealers across the United States, making it accessible whether you prefer to work through a trusted local shop or handle the installation yourself.

For diesel truck owners who demand precision fueling — from a smooth-running daily commuter to a full-pull competition rig — DDP's diesel fuel injectors represent a focused, technically driven approach to getting the most out of every drop of fuel.