9/32" Square Female Pipe Plug Socket

Part Number:



9/32" Square Female Pipe Plug Socket for Ford 7.3L 99-03

These can aid in the removal of the fuel test port plugs on each head, which is required to install the FRx. The socket is a tight fit on the passenger side plug so we suggest not using a ratchet, but use only the socket and something like an Allen wrench through the cross drilled holes in the body to unscrew the head plug.


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  • 5
    Awesome tool

    Posted by Wyo7.3 on Nov 20th 2018

    Bought the frx and tried to install without this tool as tried with a few different tools and none of them worked amazing how one simple little tool will make your life some much easier just buy it with the frx save the headaches.

  • 3
    Could only use it on one side

    Posted by Unknown on Apr 3rd 2018

    The pipe plug socket is well made and no doubt a quality tool. The issue I had was I wasn't able to use it on one side due to clearance issues.

  • 5
    Sqaure plug

    Posted by Unknown on Jan 28th 2018

    Nice looking tool turned out I didnt have square end was just an 11mm lollll

  • 3
    Couldn't use it

    Posted by Bryan on Sep 19th 2017

    The item itself is great, it looks just as well made as any other socket. My problem was that it's a 3/8 drive and not 1/4 drive. In a 3/8 drive setup I couldn't get it on the passenger side plug and was only able to use it to break the driver side plug loose, only reason for 3 stars.

  • 5
    You need this

    Posted by Art P. on Mar 4th 2017

    Tried to remove the front passenger square plug on the fuel rail for the FRx install on my 7.3. After failing with wrenches and vise grips due to the tight space I finally ordered this. I missed seeing it when ordering the FRx. Save the grief and buy this when getting the FRx. Money well spent.

  • 5
    Great product

    Posted by Luke Asbury on Jan 2nd 2017

    Fit was perfect, well thought out design

  • 4
    Solid product

    Posted by Greg M. on Jan 1st 2017

    Solid product but my 1/4" drive universal socket actually fitnin the confined spaces much easier.

  • 4

    Posted by Unknown on Nov 21st 2016

    As the headline says, drivers side great! But with the HPOP res. in the way it's difficult to use on passenger side head. Otherwise I would have given it 5 stars.

  • 5
    Solid impact grade socket

    Posted by Chris on Nov 13th 2016

    It made removing the plugs for installing the FRX lines into the heads easier. It works great, if you have a low profile ratchet or a universal joint, otherwise it wouldn't work for the passenger side.