BING carburetor diaphragm 40mm

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Diaphragm for all BING carburettors with a throat diameter of 40 mm (carburetor internal bore).

The throat (port) is measured inside the carburetor.

The diaphragm is made of a suitably soft rubber resistant to gasoline.

The diaphragm works well in the entire engine speed range - it successfully replaces the expensive BMW 13111335322 original diaphragm.

For BING carburettor with 26mm and 32mm throat diameter, select diaphragm 13-11774.