FREE SHIPPING ON ORDERS OVER $75Exclusions Apply. Click for Details.
Free shipping on orders over $75! Up to a $15 shipping credit.

  • Free standard shipping (up to a $15 credit) will automatically be applied at checkout once the qualifying product threshold has been reached.
  • Credit only applies to shipping. Any unused portion of the shipping credit does not apply to a reduction in item price.
  • US domestic ship to addresses only (excludes Alaska & Hawaii).
  • Does not include expedited shipping services.
  • Carburetor Diaphragm for 50cc GY6 139QMB Engines
    Item: P33-4187
    Carburetor Diaphragm for 50cc GY6 139QMB Engines
    All Images © 2016 Monster Scooter Parts
    $ 7 99
    Please Select Your Options
    Please Select Your Options
    Checking Product Status
    In Stock
    Ships Fri, Apr 29th!
    Out Of Stock
    Out Of Stock
    Not currently available.
    Special Order
    Special Order
    Ships within 5 days.
    Product Features
  • Warranty: 30 Days
  • Description
    Carburetor diaphragm for 50cc GY6 139QMB engines. The carburetor diaphragm is located in the vacuum chamber on the top of the carburetor. A broken or damaged carburetor diaphragm will keep your scooter from accelerating properly. It may idle fine but your scooter will be sluggish when you give it some throttle.

    An extra carburetor diaphragm is a good thing to have in your spare parts box for your Chinese built 50cc GY6 139QMB engine.