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Spark Plug wires: Should they say “Autolite Sipcon” or “Autolite Radio Resistance” ?

April 26, 2017PLUG SPARK wires

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Spark Plug wires: Should they say “Autolite Sipcon” or “Autolite Radio Resistance” ?

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[The Boss 351 spark plug wires I have seen also have “Sipcon” rather than “Radio Resistance” on the cable. The Sipcon wires use the heavy-duty orange boots with the extra ring on the bottom of the boot, and the date codes are also a little different. I have two original Boss 351’s and both wire sets are dated 4D0, for the fourth quarter of 1970. Most Autolite Radio Resistance wires are dated with a Q rather than a D. For example , 4Q9 for the fourth quarter of 1969.