Feature●Tune up kit for Mercruiser 5.0, 5.7, 7.4, 8.2 engines with Thunderbolt ignitions●Kit includes spark plug wires, coil wire, distributor cap/rotor, and 8 MR43T spark plugs●Spark plug wires replace part numbers 84-816608Q61, 84816761K17, 84-816761Q17●Distributor cap/rotor kit replaces part number 805759Q3, 805759T3, 805759T1, 13524T1, 27-805760, 805759Q-3, 805759A5, 805759A 2, 16457A 4, 13524T 1, 13524A 5, 13524A 1●Eight AC Delco MR43T spark plugs. Check your engine cover to ensure these are the correct spark plugs for your engine before ordering.Description