Petcock - 20mm x 1.5mm - 16950-374-671 - CB550 - 1975-1976

$29.95
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Reproduction Honda fuel valve / petcock for the CB550 from 1975-1976. The original part has been discontinued by Honda, so pick up a brand new reproduction! It has a pre-filter attached to prevent sediment from entering the carburetors. Thread it onto the tank and you're ready to ride! The filter attached to this petcock fits perfectly into a stock gas tank.

If there is any lining such as Kreem or other coatings on the tank outlet, it may prevent the filter from fitting through.

Threading 20mm x 1.5mm
O.D. of Filter: 14mm
ON / OFF / RES positions

Dual ribbed fuel outlets for use with 1/4" fuel, 5.3mm or 5.5mm line.

Replaces Honda OEM part number: 16950-374-671

Fits Honda:

CB550F Super Sport - 1975-1976
CB550K - 1975-1976

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

7 Reviews Hide Reviews Show Reviews

  • 5
    AWESOME PRODUCT

    Posted by Tyler Richardson on 22nd Jun 2020

    Been building a 1976 Honda CB550, petcock recently started leaking so I ordered one from 4into1. Showed up at the door super fast, fit perfectly, worked perfectly and now I’m back on the road! Highly recommend!

  • 1
    Leaks

    Posted by Ian Estes on 24th Mar 2020

    Worked for a couple weeks, now on the off position it slowly and steadily leaks causing my carbs to constantly leak out of the overflow nipples.

  • 1
    Leaks

    Posted by Warren on 24th Feb 2020

    Replaced my stock petcock on my 1976 CB550F. Fitment was identical to the original petcock which I appreciated. However, after filling the tank with the switch in the off position and fuel line disconnected, fuel drips out at a steady rate.

  • 5
    Always Great Quality and Speedy Delivery

    Posted by Unknown on 2nd Dec 2019

    I use this site for all my Honda parts and I could not be happier with the quality and level of service and price!

  • 4
    Good price Works well doesn’t leak

    Posted by Clinten on 1st Aug 2019

    I completely replace my 550 tap with this new one from 4-1 other rebuild kits leaked & were a waste of money & fuel going everywhere . This new tap has no leaks & works well : good price fast delivery to south Australia : I payed $80 for a rebuild kit plus Frieght & that one Leaked strait away nothing would fix it this cost me $25 &$20 delivery I’m happy with it so far , great fit & not leaked a drop . Time will tell if it will go the distance with plenty of use .

  • 2
    Cheap

    Posted by Unknown on 2nd May 2019

    Cheap plastic piece on the inside that rotates to allow or stop fuel flow broke on the very first rotation. I ended up using the body, and replacing the cheap plastic with the one on the original petcock.

  • 5
    Fit great, came with interior filter

    Posted by David on 11th Oct 2018

    Screwed right in. Great quality.