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MOTORCRAFT SPARK PLUG 77/78 79/81 & 84/85 5.0L
Motorcraft Spark Plug, Suppressor.
OEM replacement medium heat range spark plug. Supressor spark plugs include a resistor inside the ceramic coating that reduces engine noise in the radio created by alternators, etc. Plugs feature a tapered seat, 14mm thread diameter, 0.460" reach with a copper core and extended top.
OEM replacement for:
-1977-1978 5.0L except California. (.050 gap)
-1979 5.0L with build date before 2/1/79. (.050 gap)
-1980-1981 5.0L. (.050 gap)
-1984-1985 5.0L with CFI. (.050 gap)
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