Proper petcock for 79 GS1000SN?

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  • fishnetter
    • Jan 2026

    #1

    Proper petcock for 79 GS1000SN?

    Can't seem to figure out,and find the proper petcock for my 1979 GS1000SN! went to Z1's web,and they don't list my model.any other places i can look? looked at Bikebandit,looks like they want about $140.00+ for one.any help would be appreciated.it does have the vacuum tube also.Thanks!
  • BassCliff

    #2
    Hi,

    Call them to make sure this petcock will fit your bike:

    Z1 Enterprises specializes in quality Motorcycle parts for Honda, Kawasaki, Suzuki and Yamaha Classic Japanese motorcycles from the 1970's and 1980's.




    It's listed as fitting a GS1000GLX/SZ, among lots of others.


    Thank you for your indulgence,

    BassCliff

    Comment

    • fishnetter

      #3
      BasssCliff;

      I saw that one,but was not sure it was the right one.the price is right though! i'll call them today,and check it out.still looking for some alternatives(sources)though.Thanks!

      Comment

      • Nessism
        Forum LongTimer
        GSResource Superstar
        Past Site Supporter
        Super Site Supporter
        • Mar 2006
        • 35787
        • Torrance, CA

        #4
        You might want to measure the spacing between the mounting holes before you call them. The early petcocks have a different spacing than the later petcocks.
        Ed

        To measure is to know.

        Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

        Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

        Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

        KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

        Comment

        • BassCliff

          #5
          True, Ed.

          The petcock above is for 44mm spacing between the mounting bolts. There should be mounting adapter plates available. Give Z1 a call to be sure. They give good phone.


          Thank you for your indulgence,

          BassCliff

          Comment

          • Suzuki_Don

            #6
            Originally posted by Nessism
            You might want to measure the spacing between the mounting holes before you call them. The early petcocks have a different spacing than the later petcocks.
            I also am chasing a petcock. My bike is an early model ('77 model) it has the 44mm spacing on the mounting bolts. I have ordered the petcock as shown by Cliff and am hoping it will fit correctly when it turns up. Otherwise I will have another bit of useless junk in my shed.

            Comment

            • tlepac

              #7
              If it is 44 mm should be no problem. If you find the seating between the petcock and the tank is not good---leaking a bit after connecting up and the oval ring in place etc---then make a gasket to fit from standard cork/rubber which you can get from any auto store for cheap and this will seal things right up! Mine is working flawlessly. Just remember to make a hole for the reserve!

              Good Luck

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