At the 2025 PRI Show in Indianapolis, Dynomite Diesel Products pulled back the curtain on major expansions to its injector re-manufacturing operations—headlined by an all-new, fully in-house 6.7-liter Cummins remanufactured fuel injector program. After speaking with both Lenny and Adrian from the Dynomite team, it’s clear this isn’t a simple refresh of an existing product line. It’s a strategic investment in infrastructure, people, and precision aimed squarely at today’s diesel performance enthusiast.
As new diesel trucks grow more expensive—and emissions systems more complex and costly to maintain—Dynomite sees a clear shift in the market.
“Customers are keeping 15- to 20-year-old trucks on the road,” Lenny explained. “They’re maintaining them well, and because of that, demand for high-quality re-manufactured parts just keeps growing.”
A Market Shift Driving Injector Re-Manufacturing Demand
With the price of new trucks climbing and emissions-related service costs adding up fast, many diesel owners are choosing to reinvest in proven platforms rather than upgrade. That trend has directly fueled Dynomite’s growth in re-manufactured injectors—particularly for Cummins engines.
Dynomite currently re-manufactures all its 5.9-liter and 6.7-liter Cummins injectors entirely in-house, giving the company total control over quality, consistency, and production flow. That control is a recurring theme across every aspect of the operation.
Inside Dynomite’s New 6.7-liter Cummins Injector Program
According to Adrian, the new remanufactured 6.7-liter Cummins injector is a major step forward—and a brand-new product offering for Dynomite in 2025.
“We’re doing a full re-manufacturing process in-house, just like our 5.9 injectors,” Adrian said. “That gives us control over the manufacturing process, the internal components, and the setup design.”
One of the most notable details is how far Dynomite is pushing beyond OEM standards.
“These injectors are set up within parameters that are about 40 percent tighter than Bosch factory specs,” he explained.
Those tighter tolerances translate into more consistent fueling, smoother operation, and improved drivability—critical factors for both daily-driven trucks and performance-oriented builds.
New Internal Components and Proprietary Sealing Technology
Dynomite’s 6.7-liter injectors aren’t just cleaned and reused. Each unit features critical new components to ensure long-term reliability including brand-new nozzles, new control valves, and solenoids that fully tested and replaced if they don’t meet standards.
Both the 5.9-liter and 6.7-liter Cummins injectors also receive Dynomite’s proprietary high-pressure seal, which Adrian says is a major upgrade over the OEM Bosch fiber seal.
“Our seal stands up to about three times the pressure of the Bosch fiber seal,” he said. “That dramatically improves injector longevity and helps eliminate high-pressure seal failures.”
Dynomite has also refined injector calibration with tighter parameters to improve runability, drivability, smoothness, and efficiency, rather than sacrificing reliability for short-term gains.
Expanding Beyond Cummins: Duramax Injectors Coming In-House
Alongside its Cummins programs, Dynomite is significantly expanding its in-house capabilities for GM’s Duramax platforms. The company will begin fully re-manufacturing LB7, LLY, and LBZ Duramax injectors under its own roof.
The limiting factor until now wasn’t technical ability—it was space.
“When you’re doing 40, 50, or 60 injectors per day of one model, tearing down benches to tool up for another becomes very cost-prohibitive,” Lenny explained.
To solve that, Dynomite added a new building, allowing for dedicated injector assembly lines that never need to be torn down. Injector bodies are simply routed to the appropriate line based on demand—whether that’s a large run of LB7s or the next high-volume order.
Investing In Workforce and Long-Term Quality
Facility expansion is only part of the story. Over the past year, Dynomite has added 10 to 12 new employees, averaging roughly one new hire per month. Because injector re-manufacturing is such a niche discipline, most hires come in with little direct experience—and are trained entirely in-house.
“That’s actually a benefit,” Lenny said. “We don’t have to break bad habits. We train people our way, right from the start.”
Located in Idaho, Dynomite draws from a workforce accustomed to demanding industries like logging and mining. The company’s clean, climate-controlled environment, strong benefits, and emphasis on retention have helped build a stable, skilled team—something Lenny says is critical.
“You can’t build really high-quality parts with brand-new people all the time. Experience matters.”
Built For Enthusiasts Who Keep Trucks For The Long Haul
From tighter-than-OEM calibration and upgraded internal components to expanded facilities and skilled labor, Dynomite Diesel Products is clearly building for the long term—just like the diesel enthusiasts it serves.
The new remanufactured 6.7-liter Cummins injector program, combined with established 5.9-liter offerings and upcoming Duramax injectors, reflects a company focused on precision, reliability, and real-world drivability rather than cutting corners.
For owners committed to keeping their Cummins or classic Duramax running strong in today’s challenging diesel landscape, Dynomite’s 2025 injector lineup sets a new benchmark in re-manufactured fuel system components.
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