Driving Innovation In Diesel Performance

Fuel Injectors. Built for Reliability.

Find diesel fuel injectors for Cummins, Duramax, and Power Stroke applications. Narrow by brand, year range, and injector size to get to the right set for your truck.

Cummins fuel injectors

Cummins Fuel Injectors

Browse Cummins injector options for 5.9 common rail, 6.7 common rail, and 2019+ 6.7 SO and HO applications. This section covers stock-plus injector sizing, 30% over, 45% over, 60% over, 100% over, and late 5.9 SAC injector upgrades.

5.9 Common Rail
2004.5-2007 Late 5.9 Cummins New Exergy Fuel Injectors 60% Over (Set of 6) - E02 20207

5.9 Common Rail Injectors

Injector options for early and late 5.9 common rail Cummins trucks, including mild street upgrades and larger over-stock injector sizing for stronger fuel delivery.

  • Fits early and late 5.9 common rail applications
  • Includes mild 50HP and 100HP SAC injector options
  • Good for towing, street performance, and stock-plus builds
  • Available in reman and new injector configurations
Choose your injector set
Shop 5.9 Injectors
6.7 Common Rail
2013-2018 Late 6.7 Cummins New Exergy Fuel injectors 100% Over (Set of 6) - E02 20408

6.7 Common Rail Injectors

Common rail injector options for 6.7 Cummins trucks, including larger over-stock injector sizing for trucks that need more fuel without giving up drivability.

  • Built for 2007.5–2018 6.7 Cummins applications
  • Available in reman and new injector sets
  • Good fit for stronger tow, street, and performance builds
  • Higher over-stock sizing needs supporting airflow and tuning
Choose your injector set
Shop 6.7 Injectors
2019+ SO
2019+ 6.7 Cummins New Exergy SO Fuel Injectors 60% Over (Set of 6) - E02 20707

2019+ 6.7 SO Injectors

Fuel injectors for 2019+ 6.7 Cummins SO applications, available in 30%, 60%, and 100% over sizes depending on the fuel demand of the build.

  • Built specifically for 2019+ SO trucks
  • Available in 30%, 60%, and 100% over sizing
  • Great for stock-plus through stronger street builds
  • Tuning becomes more important as injector size increases
Choose your injector set
Shop 2019+ SO
2019+ HO
2019+ 6.7 Cummins New Exergy HO Fuel Injectors 60% Over (Set of 6) - E02 20807

2019+ 6.7 HO Injectors

Fuel injectors for 2019+ 6.7 Cummins HO applications, with over-stock sizing available for stronger street, towing, and high-output combinations.

  • Built specifically for 2019+ HO trucks
  • Available in 30%, 60%, and 100% over sizes
  • Good fit for trucks needing more fuel than stock injectors
  • Works best with the right turbocharger and calibration
Choose your injector set
Shop 2019+ HO
Duramax fuel injectors

Duramax Fuel Injectors

Duramax injector sets grouped by engine code and injector size, including LB7, LLY, LBZ, LMM, LML, and L5P applications from stock replacement through larger over-stock injector sizing.

LB7–LMM
2006-2007 LBZ Duramax Reman Exergy Fuel Injectors 30% Over (Set of 8) - E01 10305

LB7–LMM Injectors

Duramax injector sets for LB7, LLY, LBZ, and LMM trucks, with 30% over sizing for stock-plus, towing, and mild performance builds.

  • Covers LB7, LLY, LBZ, and LMM applications
  • 30% over sizing for mild upgrade use
  • Good fit for towing and street performance
  • Available in reman injector sets
Choose your injector set
Shop LB7–LMM
LML
2011-2016 LML Duramax New Exergy Fuel Injectors 45% Over (Set of 8) - E02 10507

LML Injectors

Injector options for 2011–2016 LML Duramax trucks, ranging from moderate over-stock sizing to larger race-oriented injector configurations.

  • Built for 2011–2016 LML Duramax applications
  • Available in 30%, 45%, 60%, 200%, and 300% over sizing
  • Covers mild street use through serious competition builds
  • Offered in both new and reman injector configurations
Choose your injector set
Shop LML Injectors
L5P Stock Replacement
2017+ L5P Duramax New Exergy Stock Replacement Fuel Injectors (Set of 8) - E02 10701

L5P Stock Replacement

A direct replacement-style injector set for 2017+ L5P Duramax trucks that need reliable stock-style fuel delivery for daily driving, towing, and work use.

  • Built for 2017+ L5P Duramax trucks
  • Stock replacement injector set
  • Good fit for daily-driver and towing applications
  • Clean option when replacing worn factory injectors
Ready to view
Shop Stock Replacement
L5P Over-Stock Sets
2017+ L5P Duramax New Exergy Fuel Injectors 60% Over (Set of 8) - E02 10708

L5P Over-Stock Injectors

2017+ L5P Duramax injectors in larger over-stock sizes for trucks that need more fuel volume than a stock replacement injector can provide.

  • Available in 30%, 60%, 100%, and 200% over sizing
  • Built for 2017+ L5P Duramax applications
  • Good for stronger street, strip, and competition builds
  • Larger sizes need matching airflow and calibration
Choose your injector set
Shop L5P Injectors
Power Stroke fuel injectors

Power Stroke Fuel Injectors

Injector sets for 2011–2019 6.7 Power Stroke trucks, separated into reman and new injector configurations with sizing from 30% over to 300% over.

6.7 Power Stroke Reman
2011-2019 6.7 Power Stroke Reman Exergy Fuel Injectors 100% Over (Set of 8) - E01 40110

2011–2019 6.7 Power Stroke Reman

Reman Power Stroke injector sets for 6.7 applications, covering moderate upgrades through serious high-fuel-demand combinations.

  • Built for 2011–2019 6.7 Power Stroke trucks
  • Available in 30%, 100%, 150%, 200%, and 300% over sizing
  • Good for stock-plus, street, and high-output builds
  • Higher injector sizes need supporting fuel and air
Choose your injector set
Shop Reman Injectors
6.7 Power Stroke New
2011-2019 6.7 Power Stroke New Exergy Fuel Injectors 100% Over (Set of 8) - E02 40110

2011–2019 6.7 Power Stroke New

New Power Stroke injector sets for 6.7 applications, with injector sizes available for mild upgrades, stronger street builds, and large fueling combinations.

  • Built for 2011–2019 6.7 Power Stroke trucks
  • Available in 30%, 100%, 150%, 200%, and 300% over sizing
  • Strong option for higher-demand fuel system builds
  • Best results come with matching turbocharger and tuning
Choose your injector set
Shop New Injectors
Knowledge Hub

Everything you need to know about D&J diesel fuel injectors

D&J fuel injectors are grouped by brand first because Cummins, Duramax, and Power Stroke trucks each have different injector families, year ranges, and upgrade paths. From stock-plus injector sizing to 30%, 60%, 100%, 150%, 200%, and 300% over sets, the right injector depends on the fuel demand of the build, the turbocharger, the fuel pump, and the calibration.

  • Diesel injectors grouped by engine familyCummins, Duramax, and Power Stroke injector sets each follow their own fitment path. Separating the page by brand makes it easier to move into the right year range and injector size quickly.
  • Injector size should match the combination30% over, 60% over, 100% over, 150% over, 200% over, and 300% over injectors all serve different fuel demands. The right injector depends on airflow, turbo size, intended horsepower, and how the truck is used.
  • Mild upgrades and high-output sets both matterSome trucks need a stock-plus injector for towing or street use, while others need significantly more fuel supply for larger turbochargers and serious horsepower builds.
  • Supporting parts still make the differenceFuel pumps, turbochargers, calibration, filtration, and the rest of the fuel system still matter. Larger injectors work best when the entire combination is built to use them correctly.

FAQs

How do I choose the right diesel fuel injectors for my truck?
Start with the engine family and year range first, then match the injector size to the fuel demand of the build. A towing truck, daily-driven street truck, and high-horsepower competition build will not need the same injector set.
What does 30% over, 60% over, or 100% over mean on diesel injectors?
Those terms refer to injector size relative to stock fuel flow. A larger percentage generally means more fuel volume is available, but injector size should always match the turbocharger, fuel pump, tuning, and intended horsepower.
Are larger diesel injectors always better?
No. Larger injectors only make sense when the rest of the combination can use the extra fuel. Oversized injectors on the wrong setup can hurt drivability, increase smoke, and make the truck harder to tune cleanly.
What is the difference between reman and new injector sets?
Reman injector sets are built from usable cores and reconditioned to spec, while new injector sets are built from new components. Both can be excellent options, but availability and sizing vary by application.
Do I need tuning with larger fuel injectors?
Yes, especially once you move into larger over-stock injector sizes. Proper tuning is important for drivability, smoke control, exhaust gas temperatures, and overall performance.
Can upgraded injectors help a towing or work truck?
They can, but the right choice is usually a mild injector upgrade instead of jumping straight to a large competition-style set. Many towing trucks are best served by a stock-plus injector and the right supporting fuel and air setup.
Why are injector options split by Cummins, Duramax, and Power Stroke?
Each diesel platform has its own injector designs, fitment details, and upgrade path. Grouping injectors by engine family keeps the page easier to use and helps avoid fitment mistakes.
What should I verify before ordering injector sets?
Confirm the engine year range, intended horsepower, injector size, fuel pump support, turbocharger setup, and whether the truck is mainly street-driven, tow-focused, or built for competition.

*Injector sizing needs vary by turbocharger, fuel pump, tuning, intended horsepower, and how the truck is used.