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The Moroso Ultra spark plug wire set for BBC (big-block Chevy) engines routes over the valve cover and uses straight plug boots with HEI-compatible terminals, finished in black sleeved insulation. It’s made to simplify traditional over-valve routing on big-block installs, giving a neat, color-matched look while matching HEI distributor systems where specified.
Moroso BBC Over Valve Cover Str Plug End HEI Sleeved Ultra Spark Plug Wire Set - Black
