Unlimited Diesel Stage 4 (300/200) Hybrid Injector Set | 94~03 7.3L

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Unlimited Diesel 300/200 Hybrid Injector Set | 94-03 7.3L Powerstroke

These Injectors are HIGH PERFORMANCE injector capable of 650+hp. 

These will NOT work on a stock truck. These are huge and a bad idea. There is no reason for these injectors unless you just love breaking parts, and having to call cousin Robbie every Friday night when you blow your shit up.


Our Recommended Turbos:
2. Irate Diesel T4 mount kit with S472SX-E - No point in reading this if you are actually in the market you already know or you will call me. (contact us page)

1. Irate Diesel T4 Mount kit with S467.7 - This is our MOST recommended turbo for these injectors. Quick spooling, (ish) good EGT Control (ish) and capable of 600-650HP when combined with these injectors.  

Potential Gains over Stock:
Max potential (in a race tune) these injectors combined with good tuning and a proper turbo will gain about 450-550HP over a bone stock truck.

*Head studs, Dual HPOPs, an ACTUAL built transmission, massive fuel pump or dual pumps, adding billet rods on purpose is a good idea..  this injector will eject-o seat-o your stock rods to the upper atmosphere if you dont anyway.*

*Custom tuning is required to run these injectors on any truck (isn't this obvious?)*

Each Unlimited Diesel Performance Powerstroke fuel injector:

  • Includes NEW Tungsten coated Plunger & Barrel assemblies
  • Inlcudes NEW Nozzles
  • Has o-rings replaced, and new nozzle springs installed
  • Solenoids are all inspected for proper resistance
  • Cores thoroughly cleaned using a Pro Ultrasonics cleaning unit for a super clean injector body.
  • Injector clearances reset to proprietary specs
  • Is bench tested at a full range of RPMS and oil pressures
  • Is backed by Unlimited Diesel's limited lifetime warranty

Common Issues that require Powerstroke fuel injector replacement:

  • Plugged Nozzles
  • Blowby from Nozzle Pintle
  • Scored Plungers and Barrels
  • Broken Plunger Spring
  • Broken Nozzle Spring
  • Blown Internal Orings
  • Blown External Orings
  • Scored Poppet Valves
  • Worn Armature Clearances
  • Armature contacting solenoid
  • Loose adapter plate screws
  • Loose armature screw
  • Shorted/open solenoid

*Fuel injectors are sold in sets of 8. Call for single fuel injector pricing. We use ONLY New Alliant Power External Orings, beware of cheap orings. We have had multiple customers call us with competitor products using inferior orings that have failed.

Core charge will be refunded provided your existing Powerstroke injectors do not have any external damage and are rebuildable.

Under no circumstances will any injector cores be accepted that are shipped via United States Postal Service. There is a $50 per day late fee for cores returned after 21 days. Cores must be injectors that are in good physical condition, are rust free, and have not been burned or externally damaged. Cores that have been subjected to any alternative or "Bio" fuels will not be accepted as good cores. Any injector received that is disassembled or missing parts will not be accepted as a good core. There is a $50.00 charge per damaged solenoid. Cores should be returned in original packaging to avoid damage. To make special arrangements for core returns please contact us for approval.

Click here to download Powerstroke fuel injector limited lifetime warranty information from Unlimited Diesel.


***For expedited shipping choose UPS ONLY***

***Injectors parts must be returned in original OEM boxes for full core credit.***

***If you choose to keep your old injectors and have not paid the full core charge... you will be billed the difference.***

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Warranty Information

Warranty: Lifetime | Unlimited Miles
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