QuickSilver 847701Q17 Complete Set of Blue Wire Spark Plug Wires with Boots at Spark Plug End Complete set of blue wire spark plug wires with boots at spark plug end Tailored to reach correct plug location Designed for efficiency, endurance and durability in a marine engine environment Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive