C5AZ12171A - Contact breaker OE number by FORD

FORD :   C5AZ-12171-A, C 5 AZ 12171-A, C 5 AZ 12171 A
  OE Number - stands for Original Equipment Number - the number of complete component or sub-assembly that was originally fitted to the vehicle. OE Number is interchangeable with the term Genuine Number

Replacement parts compatible with OE numbers