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 Patent Pending 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
    Stainless cups

    Posted by Anthony Meinert on Oct 14th 2020

    Best cups on the market easy to install with the rental tool. Took some time but was rather easy.

  • 5
    Quality Stainless

    Posted by Craig Evans on Oct 11th 2020

    Arrived on time, well packaged, and very high quality machining. Impressed with this product all the way around. Install was a breeze with the rental tool, much easier than seen on YouTube beating cups in with a hammer.

  • 5
    Stainless Cup Install

    Posted by Unknown on Sep 6th 2020

    Very precision made parts. Outstanding quality, and packaging. Easy install with the supplied cup tools. A+ all the way around.

  • 5
    Stainless cups

    Posted by Shane Herold on Jul 29th 2020

    Extremely high quality cups. Very impressed with how they look and should perform great.

  • 5
    Problem solved for good

    Posted by James on Jul 29th 2020

    Rented the tool and purchased these cups due to fuel in my coolant. Precision looking cups, very well packaged and tool made the job easy to accomplish even in my garage. Running these for about a year and no issues at all, still sealed and would recommend them. Just don't forget to rent the tool as it couldn't be an easier way to install them.

  • 5

    Posted by MITCH PARKER on Jun 23rd 2020


  • 5
    Stainless steel injector cups

    Posted by Ron Thompson on Jun 23rd 2020

    Would recommend this cups,excellent quality

  • 5

    Posted by Unknown on Jun 23rd 2020


  • 5
    Stainless Cups

    Posted by Matt on Jun 21st 2020

    I dropped these off at the machine shop with my heads and when I picked it all back up they wanted to know where I found them. They said they couldn't believe the quality and were even more excited when I told them they were made in the USA. They said that they would be finding you guys and only buying these from now on! Glad I found you and that your make such nice stuff it even made the machinists impressed. Keep up the awesome job.