DIAPHRAGM, Secondary Control, The secondary diaphragms are not included in the carburetor rebuild kits, See 9583-1A for replacement plastic arm,
NPD Part Number : 9503-2 Manufacturer Reference #'s: 64-201, C5AZ-9503-A
1965-1966 MUSTANG FORD 4100 4V CARB, W/ PLASTIC ARM, CARB ID# C5OF-J,K,T,U, C5ZF-E,F,L,M, C6ZF-A,B,C,D,E,F
1967-1967 MUSTANG FORD 4100 4V CARB, W/ PLASTIC ARM
1967-1967 COUGAR FORD 4100 4V CARB, W/ PLASTIC ARM
1965-1967 FALCON FORD 4100 4V CARB, W/ PLASTIC ARM
1965-1967 FAIRLANE FORD 4100 4V CARB, W/ PLASTIC ARM
WARNING: This product can expose you to chemicals including lead and DEHP, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.