Quicksilver 816761Q14 Spark Plug Wire Kit for MerCruiser with Delco EST -19902016Quicksilver Spark plug wire kit for MerCruiser 3.0L and LX engines equipped with Delco EST ignition systems (19902016). Includes a complete set of wires with boots at the spark plug end, each tailored for proper fit and routing. See your owner's manual for installation .Features Fits MerCruiser 3.0L and LX engines with Delco EST ignition (19902016); Includes complete set of spark plug wires with boots; Tailored lengths ensure correct plug connection; Marine-grade construction for durability and performance; Fits: MCM 3.0L/LX w/ Delco EST ignition (1990-2016)