carburetor diaphragm 18mm round slide diameter for China 4-stroke 139QMB/QMA

Carburettor membrane with slide and adjustable carb needle. Various CVK carbs of the same basic construction are installed on 4-stroke vehicles. The differences are, for example, the use of different slide diameters. For this reason, you should measure the diameter of the original item before ordering, in order to avoid any errors. This membrane is suitable for 18mm diameter slides and comes with adjustable carb needles.