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  • oil pressure sending unit

    My question is there any difference from a panhead oil sending unit and ul flathead sending unit Thanks if you can help

  • #2
    yes, there are different versions for different eras,but the main difference is length of the hex to the threads is longer on OHV.Palmers book shows many of these differences

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    • #3
      The threads are also different on newer units than early ones. Late are 1/8NPT, early are a straight thread. Don't mix them up. H-D made an adapter to use the late switch on early engines. And the 45 (WL/WLA/etc) are also the same as UL.
      Robbie Knight Amca #2736

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      • #4
        The only aftermarket adapters I could find were straight thread to straight not straight to npt as I was hoping. I was able to run a tap down the female end and make it pipe thread. If memory serves I was running an earlier pump on a 60FLH.

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