SKU: 72970993628

Dynomite Diesel 75 Horsepower Injector Set 04.5-05 LLY GM Duramax

Sale price$1795.50 Regular price$1995.00
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Description

Dynomite Diesel 75 Horsepower Injector Set 04.5-05 LLY GM DuramaxDynomite's 75 horsepower injectors are notorious for providing a very noticeable increase in power, and typically in MPG's as well, while being extremely clean out the tailpipe. There's no better way to make your Duramax Fly! With the Allison 5 and 6 speed, the Duramax is already fun to drive. Why not add an additional kick with some Dynomite injectors? This injector set will deliver an additional 75 horsepower for extra pulling and play power, and

Dynomite's 75 horsepower injectors are notorious for providing a very noticeable increase in power, and typically in MPG's as well, while being extremely clean out the tailpipe.

There's no better way to make your Duramax Fly! With the Allison 5 and 6 speed, the Duramax is already fun to drive. Why not add an additional kick with some Dynomite injectors? This injector set will deliver an additional 75 horsepower for extra pulling and play power, and will typically net a noticeable increase in fuel economy, as well, yet are capable of supporting 675 RWHP with supporting modifications. Whether your original injectors have failed and are in need of replacing, or you just want a power increase, these are a great addition to any Duramax!

Dynomite Diesel K-Factor Injector Nozzles – Precision. Performance. Power.
When it comes to injector nozzles, it’s not just about how much fuel you can dump, it’s about how efficiently you can deliver it. That’s where Dynomite Diesel’s K-Factor technology sets itself apart from the pack. Most aftermarket nozzles rely on standard EDM machining, quick, cheap, and dirty. But Dynomite Diesel isn’t “most.” Instead of stopping at EDM, they take it further with Advanced Flow Machining (AFM) and precision honing that smooths out imperfections, polishes internal surfaces, and radii the inlet of each orifice. The result? Clean, consistent spray patterns that make more usable power, not just smoke and heat.

Why K-Factor Nozzles Matter:

  • Removes Flow Restriction at Orifice Entrance: Eliminates the natural low-pressure zone where fuel enters the orifice, allowing smoother and faster flow.
  • Better Fuel Atomization: Fine mist = cleaner burn. That means less black smoke, lower EGTs, and more bang per drop of fuel.
  • Delivers More Fuel at Same Pressure: Pushes more volume through a smaller hole, yes, really. It’s about optimized shape, not just size.
  • Reduces Turbulence: Smoother internal geometry minimizes swirl and pressure loss inside the nozzle, no flow drama here.
  • Improved Power and Efficiency: With better atomization comes better combustion, and that means more horsepower, cooler temps, and increased fuel mileage.
  • Less Smoke, More Go: Bigger isn’t always better, smoky, hot tunes waste fuel. K-Factor nozzles strike the perfect balance for performance builds and daily drivers alike.

Dynomite starts with blank nozzles or custom machined pieces based on specific spray angle requirements. Each nozzle goes through a proprietary honing process, no shortcuts. The end result? A nozzle that not only flows more but does so smarter, delivering cleaner, cooler, more efficient power than the competition. Whether you're building a mild street truck or an all-out track monster, K-Factor Nozzles give you the edge where it counts, in real world performance.


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 72970993628

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4.3 ★★★★★
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Lawrence Crighton
Massapequa, US
★★★★★ 5
Highly recommend!
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
It’s all metal! Even the arm that holds the phone!!! All metal!!!!! No cheap plastic! You can drill or clean and stick. 2 for mounting. No more breaking air vents and suction cups cheap plastic that falls off the window or rear view mirror holder that blocks your vision. This is definitely worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026
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Verified Purchase
Joshua M.
Lexington, US
★★★★★ 2
The concept is great, the item is sub par.
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
I bought this for a 2021 Silverado WT thinking I'd be able to screw this into the dash cubby as the adhesive wouldn't servive -50⁰ F Fairbanks winters. Beware, if you own this truck, you have to remove the entire dash assembly to include instrument cluster and infotainment system in order to screw this into the cubby. The cubby on this model is actually apart of the entire upper dash panel and cannot be removed separately as the instructions state. I decided I'd give the adhesive pad a try until I bought some self tapping screws but the mount is not contoured like my cubby, therefore it badly rocks. I don't recommend this to anyone with a 2021 Silverado WT unless they want to spend over 3 hours installing this.
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Reviewed in the United States on May 8, 2026
Z
Verified Purchase
Zach Pike
Belleville, US
★★★★★ 5
Highly recommend
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
Great fit, looks awesome! Very easy to install !
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Reviewed in the United States on May 19, 2026
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Verified Purchase
Brian
West Palm Beach, US
★★★★★ 5
Affordable and well built
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
Perfect fit and well built, saved alot of money going with this!!!! Will be using for GoPros on hunting and camping trips.
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Reviewed in the United States on March 17, 2026
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fewless
Massapequa, US
★★★★★ 3
Expected more for the price.
Size: Fit for Silverado 2020-2025 GMC Sierra 2019-2121
Arms are a bit short, and within a week, I could already feel the springs feeling a bit ridged. Holds well and does the job. Looks nice to!
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Reviewed in the United States on May 4, 2026

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