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! Precision 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 $50 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 you when finished.  

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 40 days you will loose your deposit.


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

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  • 5
    SS injector cup

    Posted by Cody on May 28th 2020

    Very nice cups. Look and feel superior to the brass cups! The rental tool made pulling and installing a breeze. I would recommend both to anyone needing to replace their cups.

  • 5
    Injector cups and tool

    Posted by Pat on May 12th 2020

    Cups look good and went in good, they are buried deep now but I expect them to outlast me.
    The tools was a must have and made the job easier, no hammering in tight spaces. I used thread cutting oil and cleaned the tools threads between each extraction. Was plenty of locktite retaining compound. Insertion was a piece of cake, 35 ft lbs did it for me. If I ever do this job again I will rent this tool set.

  • 5

    Posted by Roberto on Apr 28th 2020

    Really very good work, good finish, it is perfect for my excursion.

  • 5
    Quality cup set

    Posted by Unknown on Apr 19th 2020

    When you hold these in your hand they are impressive to look at. Heavy duty and the machining is top notch.

  • 5
    quality you can see

    Posted by Dan Jenkins on Mar 29th 2020

    I used brass last time on my dads 2002, but thought I would try these on my 1999. Went right in, just like the OEM brass but you can really see the quality in these. They are heavy duty, stout and I bet they will last forever. Thank you guys for always innovating for these trucks, and producing such a great product.

  • 5
    Stainless cups

    Posted by dan simmons on Mar 28th 2020

    Super stout product, excellent price. Rental tool is way better than other options out there.

  • 5
    Slick idea

    Posted by Gary J. on Mar 12th 2020

    Full disclosure, I hear about these on a YouTube channel and while Im so glad I learned they were available the person making the video constantly mentioned how hard stainless were to install. I was worried that I might have issues with install, but got them anyway. I have NO idea what he was talking about because they went right in, no difficulty at all. This was as easy as the job gets thanks to riffraff's cup tool set. Take my advise, and get these quality built cups and don't believe everything you hear on the internet.

  • 5
    Stainless Injector Cups

    Posted by Charlie Colvin on Mar 9th 2020

    Very high quality and precision fit. I highly recommend this upgrade. And rent their removal/install tool! I've never used anything that works this smooth.

  • 5
    Stainless Injector cups

    Posted by David Hunt on Feb 28th 2020

    Great heavy duty product. I’ve had cracks in two sets of brass one and I think this will cure my problem.