Honda Motorcycle Fuel Valve Petcock - 20mm x 1.5mm

$24.95
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Fuel valve / petcock for the Honda CB400F and all other bikes that use 20mm x 1.5mm petcock threading. Has a pre-filter attached to prevent sediment from entering your carburetors. Thread it onto your tank and you're ready to ride! Has ON / OFF / RES positions.

Threading 20mm x 1.5mm

22mm hex nut.

Ribbed fuel outlet perfect size for use with either 3/16" or 1/4" fuel line.

NOTE: Always measure the outer diameter of the male threading on the gas tank prior to purchase. Honda changed the petcock threading size on some models mid year. Some models below such as the CB550 originally had 2 outlets, you will need a fuel connector to split the single fuel line into 2 lines for the carburetors.

Fits Honda:

CB400F Super Sport - 1975-1976
CB500T - 1975-1976
CB550F Super Sport - 1975-1976
CB550K - 1975-1976
CB750F Super Sport - 1975-1976
CB750K - 1975-1976

may fit other years, makes and models with matching threads...

13 Reviews Hide Reviews Show Reviews

  • 5
    Petcock 20x1.5mm

    Posted by Albert on 25th Jul 2024

    This item was ordered incorrectly by me. Needed the 16x1.5mm. Sent the part back and got store credit. Ordered the correct part and it fits great!

  • 3
    Weeps fuel

    Posted by Kelly Deffendall on 26th Dec 2023

    Initially decent, but slowly weeps fuel. Always wet after sitting and I've verified it's not coming from the threads. Wish they had a genuine Honda replacement.

  • 5
    THIS WORKS FOR A STOCK CB500T GAS TANK

    Posted by THE MAN on 20th Sep 2022

    I works perfectly for a 76 and I presume a 75 CB500T gas tank. You will have to buy a "T-splitter" to get gas to both carbs, but that is easily done.

  • 3
    Almost fits

    Posted by Dan on 7th Jun 2021

    Threads did not fit my cb750 tank. Minor adjustment to make it fit. Looks good. Functions great. No leaks. I wish the filter was also sold separately.

  • 5
    fuel valve

    Posted by John Borbridge on 23rd Jul 2020

    product received in a timely fashion. it was installed and functions as advertised

  • 5
    Great price and fit

    Posted by Bmo on 13th Dec 2019

    A budgeted version of fuel valve that works perfectly on my 1975 Honda CB400F.

  • 5
    Fits Perfect!

    Posted by Bellini Custom Works on 20th Sep 2019

    Very good Made. Fitted perfect my cb500T tank.

  • 4
    Works well

    Posted by Unknown on 2nd May 2018

    Bought as a replacement for my '76 CB550Ks original leaky petcock. Installs perfectly, however doesn't align outward quite as nicely as I'd like. Notes: - Make sure to tighten it all the way down and check it after a few rides; mine came slightly unseated and leaked a bit. Re-tightened a quarter turn, no problems since. -Reserve height is higher than my old stock petcock. Old one used to need switched around 1/4-1/3 gallon, this one needs switched around 3/4 gallon. Overall worth the price.

  • 4
    Nice

    Posted by Ale on 13th Jan 2017

    Good product