Injector Cup Stainless Steel Sleeve Set 7.3L 94-03

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

Now Offering our Multiple Patent Pending 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

We offer to rent you the injector cup puller/ installer as well with your purchase of the cups for a $499 deposit.  We charge $75 to rent the tool which will be deducted from your deposit, which also includes a pre-paid return USPS shipping label that we can email when you finish and notify us.  

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 are able to 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 make shavings that end up in your cylinders. 

Our Patented install tool is really the break through since rather than trying to hammer on it in tight spaces and hope your cup is seated you simply use a socket and allow it to press the cup in.  This allows for a completely seated cup every time, no guessing, no hammering, even on the back cylinders or e-series vans. To ensure our install tool doesn't deform your new cup, like other competitors tools, we have machined it so that it engages both the full surface of the cup bottom as well as the top lip.  We have put an o-ring on it so you can strategically put your cup in the injector bore instead of dropping it in and hoping your sealant stays intact. In order to allow the cup to seat without turning in the head we have engineered the install tool with a ball bearing so it remains stationary while you turn in the press.

We also have retaining compound and injector orings available for purchase that is used by Ford and International when reinstalling the cups.

Please note that if the tool is not received back by 30 days from customer receipt then there will be a $25 late charge.  If tool is not returned in 60 days you will lose your deposit.


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

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  • 5
    Stainless Injector Cups

    Posted by Jim Wills on Apr 14th 2022

    The packaging was excellent and represents just how nice these cups are. After looking at each and every one you wouldnt believe how nice the quality is. Very durable, as well as and excellent machining. I would highly recommend this and their rental tool as it made the job almost a breeze.

  • 5
    Injector cups

    Posted by Bakers Auto repair on Mar 25th 2022

    Great Product and great service

  • 5
    These cups were package so nicely and went perfectly in my truck

    Posted by Jeffrey Butcher on Feb 22nd 2022

    Thanks for the product and having them shipped quickly

  • 5
    Stainless Cup Set

    Posted by Travis Rogers on Feb 16th 2022

    Great product the whole way along. They were well packaged in a custom box, quick shipping, and installed just like they should. From the looks of them I will enjoy years of worry free driving in my iconic 7.3.

  • 5
    Stainless Injector Cups

    Posted by William P. on Feb 1st 2022

    These are really nice. A lot heavier than the stock cups. Nice thick sidewall. Went in great and holding well. Definitely recommend.

  • 5
    Excellent Injector Cup Set

    Posted by Jeff Hampton on Jan 30th 2022

    Once again Riffraff Diesel is proving why they are the leader in the 7.3 powerstroke market. These cups are innovative, unbelievable quality, and a must that should be a no brainer. Quick delivery, and all the items I needed to replace the stock brass cups. The rental tool made the job much easier than I thought, and we are back on the road. Almost 20,000 miles now pulling our 5th wheel and no issues. Thank you guys for all the great products and excellent customer service.

  • 5
    Obviously the right choice

    Posted by Jason C. on Jan 8th 2022

    These are by far the quality choice for injector cups on the 7.3L. Riffraff is leading the way and keeping our 7.3 on the read for decades to come.

  • 5
    Clearly the Best

    Posted by Will on Dec 14th 2021

    Once you see these in person you can really appreciate the quality and time that must go into making them. With the rental tool they offer the install went smooth and my 7.3 is back on the road.

  • 5
    7.3 stainless steel injector cups

    Posted by Jeremy on Oct 27th 2021

    Excellent product,CNC machined and made in USA. Well worth the money spent and I recommend this product for the excellent quality.