Autolite 4100 Secondary Pump Diaphragm Kit Ford 4100 Motorcraft 4100 [APD201]

Autolite 4100 Secondary Pump Diaphragm Kit Ford 4100 Motorcraft 4100 [APD201]

This kit replaces both types originally fitted to the Autolite/Motorcraft 4100 series carburettor

Kit consists of Diaphragm, Gasket & Rocker Arm [OEM #: C5AZ-9853-A]
Having this rocker arm allows the diaphragm to replace both male and female OEM types. 

This is a vacuum diaphragm, not a fuel one, it opens the secondary throttle as the vaccum increases in the pimary venturis

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