Restore proper secondary throttle operation on your classic Ford or Mercury with this new replacement secondary diaphragm rocker arm for Autolite 4100 carburetors. Designed for use with early-style diaphragm assemblies, this plastic rocker arm features a male connection and can also be used to replace the original metal-style rocker arm found on some factory carbs.
Material: Durable molded polymer (replaces original metal rocker)
End Type: Male – requires a female-style secondary diaphragm