Mercury - Quicksilver 816608Q82 Red Wire Spark Plug Wire Kit V6 GM MerCruiser Engines (262 CID) Delco HEI Ignition 816608Q82. Overview. If your MerCruiser isn't running as smooth as it used to, weak or worn plug wires could be to blame. The Quicksilver 816608Q82 Red Wire Spark Plug Wire Kit restores clean ignition and steady power to your V6 GM-based 262 CID MerCruiser engine (1996-2001) equipped with Delco HEI ignition systems.. Each wire in this OEM kit is precision-cut to the proper length, f