Thread size

Discussion in 'K-Jetronic OEM injection' started by dogzila, May 26, 2019.

  1. dogzila Forum Member

    Sep 25, 2008
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    014055000.png Has anybody knows what thread size is of fuel feed and return pipes (circled)? I want to use original fuel pipes from tank and custom rubber pipes attached to EFI fuel rail.
  2. rubjonny

    rubjonny Administrator Admin

    Oct 31, 2003
    Likes Received:
    pretty sure they are M12x1.5, try a metering head feed/return bolt in one of them (27 or 35) if those thread in then yep, m12x1.5

    what I normally do though is cut the barbed fittings out of the feed and return lines 33 and 34 then fit the rubber ends on there, though not an option if you wanted the chance to go back to standard or sell the lines on later

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