D
E head = ASF42C (carb) or AFS52C (CFI)
D9AE head = ASF42C (carb) or AFS52C (CFI)
E5AE head = ASF42C (carb) or ASF52C (CFI)
E6SE head = A
WSF42C
E7TE head = ASF42C
GT40 head = A
WSF32C (motorcraft catalog) or A
GSF32C (motorcraft.com)
GT40P head = A
WSF32C (motorcraft catalog) or A
GSF32C (motorcraft.com)
ASF
42C = 14mm thread diameter,
.460" reach, carbon suppressor, tapered seat,
medium temperature, extended tip, Copper core center electrode
ASF
52C = 14mm thread diameter,
.460" reach, carbon suppressor, tapered seat,
medium temperature, extended tip, Copper core center electrode
A
WSF
32C = 14mm thread diameter,
.708" reach (.288" short travel), carbon suppressor, tapered seat,
cold temperature, extended tip, Copper core center electrode
A
WSF
42C = 14mm thread diameter,
.708" reach (.288" short travel), carbon suppressor, tapered seat,
medium temperature, extended tip, Copper core center electrode
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