Injector Cup Billet Stainless Steel Sleeve Set 7.3L 94-03

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Riffraff Diesel Injector Cup Billet Stainless Steel Sleeve Set 7.3L 94-03

Now Offering our PATENTED Precision CNC Machined Stainless Steel Extreme Duty injector cups and are priced as a kit of 8.


  • CNC Machined for precise quality
  • USA Made Billet Stainless Steel 
  • 100% Designed and Manufactured in USA
  • Thicker wall in weak areas for longer lifespan 
  • Greatly increased durability versus stock brass

With your purchase of the cups, we offer you the option to rent the injector cup puller/installer for $75. The rental fee will be taken from the $499 rental tool deposit paid at checkout, with the remaining deposit refunded upon our receipt of the rental tool in good condition. Simply email us within 30 days when you finish with the tool and we will send you a pre-paid USPS shipping label to return the tool.* 

Our Patented puller allows you to remove the cups without removing the heads or using a slide hammer. Also, by using the tool to grab the cup, you can inspect each cup for damage once it has been removed. Other methods (typically a tap) are likely to damage the cup during the removal process and create shavings that end up in your cylinders. 

Our Patented install tool is really the breakthrough; rather than hammering on your new cups in tight spaces and hoping they are seated, simply use a socket and allow the tool to press the cup in. The tool allows for a completely seated cup every time; no guessing and no hammering, even on the back cylinders or e-series vans. To ensure our install tool doesn't deform your new cup as our competitors tools do, it is machined to engage both the full surface of the cup bottom and the top lip. The tool also features an o-ring as a keeper to allow strategic placement of the cup in the injector bore instead of dropping it in and risking displacement of your sealant. In order to allow the cup to seat without turning in the head, the install tool is engineered to include a ball bearing to prevent cup rotation while being pressed in. 

We also have available for purchase the retaining compound and injector o-rings used by Ford and International when reinstalling the cups. 

*Please note that if the tool is not received back within 30 days from customer receipt, then a $25 late charge will be withheld from you deposit. If tool is not received back within 60 days, you will lose your entire deposit. 


Set Includes - 8 SS Injector Cups and optional rental of the tool. 

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  • 5
    High Quality Stainless Cup Kit

    Posted by David on Jul 2nd 2024

    These surpass the stock brass cups by a mile. I have used them exclusively for the last year and after 5 sets can say they are the best quality you can buy for your 7.3

  • 5
    Excellent improvement over stock brass cups.

    Posted by Patrick Hansen on Jun 20th 2024

    Much better than the stock injector cups,also bought
    Install tool, excellent quality, just like all riffraff parts.

  • 5
    Stainless injector cups ...

    Posted by Colin Hein on Jun 11th 2024

    Excellent product. When you hold one in your hand next to the old brass cup, you can not only see the difference, you can feel it. Much more substantial.

  • 5
    Best tool

    Posted by Victor Rodriguez on May 24th 2024

    150% recomend this tool is perfect removal sleeve 7.3 power stroke

  • 5
    Stainless Injector Cup

    Posted by Steve Cook on May 11th 2024

    These worked perfect, and the workmanship is some of the best I have seen. After using these I would never go back to brass cups.

  • 5
    No problems

    Posted by Charles Wilson on May 4th 2024

    Excellent fix and quality

  • 5
    Injector cups

    Posted by Austin Murphy on Mar 15th 2024

    Bought these along with the tooling from Riff Raff. Cups are absolutely beautiful parts. Install was easy with tooling, I did notice these had a firm feel on the ratchet as they settled into the cylinder head, and a solid set as they bottomed out. Made sure to wipe any bearing mount off the injector bore once seated. I also noticed that the injectors were a tighter fit with these it seemed like. Not in a bad way, just that these are a better, tighter tolerance. Great product.

  • 5
    Nice update

    Posted by Airport auto tech on Mar 1st 2024

    Thank you so much

  • 5
    Best Quality Injector Cups

    Posted by Brad Jacobson on Jan 28th 2024

    These are without a doubt the best quality injector cups. They came very safely packaged, and you can tell the quality from the start. Just for fun I took a set of calipers and measured them to check just how accurately they were machined. I couldn't find a single issue with any of them. Riffraff Diesel holds standards that the rest of the diesel industry should take heed and do their best to achieve.