RFI capacitor comparison: old F3TF18801CA versus new Ford part F…

RFI Capacitors
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Unlike the similar-looking condenser (capacitor) on older points-style ignition systems which was required for the system to work, these RFI capacitors are only to reduce noise in the radio (primarily in the AM band). The later design F6UZ-18832-AA (~$8~11 at dealership) is an upgrade & direct replacement for the older metal design.

See also:

Owner caption August 2022 · Photo 6135 of 6546