Seller notes

Spark Plug Wire Set - Ultra 40 - Spiral Core - 8.65 mm - Black - 90 Degree Plug Boots - HEI Style Terminal - Under Header - Big Block Chevy - Kit Ultra 40 un-sleeved wires are a cost effective version of the Ultra 40 Race Wire without heat sleeving.Wires feature a Kevlar core, four times stronger than other aramid fiber cores, that increases the tensile strength of the wire while reducing its center diameter.This allows for the surrounding insulation to be thicker, resulting in greater dielectri...

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