SX/Buschur/Switzer AFPR fuel fitting size?

[talon77]

I have one of the old AFPRs that I bought from Tym Switzer a looong time ago that directly bolts onto the fuel rail. It came with a barbed fitting for a 5/16" fuel hose that runs to the stock 5/16" metal hard return line. I would like to replace the barbed fitting with AN fittings and braided hose to connect to a GM (Continental) Flex Fuel sensor, but I have no idea what size AN fittings/hoses to buy. Would anyone happen to know what size AN fittings fit this AFPR body? Below is a link for the AFPR that I'm talking about:

https://www.dsmparts.com/customer/product.php?productid=804&cat=121&page=

Thanks

 

[Tiki2777]

Take the fitting off, and take it to ACE and find whatever thread size/pitch female fastener it threads in, then search for an army navy adapter fitting to whatever AN size you want.

 

[talon77]

I emailed Tym Switzer today and he recalled it being -6AN, but I think I will remove and double check to be sure. Thanks!

 

[Tiki2777]

I emailed Tym Switzer today and he recalled it being -6AN, but I think I will remove and double check to be sure. Thanks!

Remember the barb fitting original to that regulator is not an Army Navy threaded fitting, you need an Army Navy -6 adapter to the thread pitch inside the regulator. RTM Racing sells a kit noting the standard AFPR fittings are -6 or -8 Oring boss (-6ORB) fittings.

 

[talon77]

Thanks for the clarification on the needed -6ORB to -6AN fitting. I will definitely remove and double check before ordering.

 

[talon77]

Just wanted to close the loop on this, for anyone who references it in the future. The fitting that came on the Switzer/Buschur AFPR was definitely -6ORB (O-Ring Boss). Here is a picture of it. Good call @Tiki2777