Sierra 18-5225 Universal Spark Plug Wire KitSierra Spark Plug Wires are the highest quality marine wire sets available anywhere in the world. Spark Plug wires are constructed of Hypalon with a metallic core. Kit includes spark plug wire and 3 different end fittings to fit outboard motors. Hypalon with metallic core; 25' Spark Plug Wire; Wire Size: 7mm; Interchangeable with: Mallory; 9-28120; Mercury Marine; 84-813706A26; 84-99215A26; 84-93475A26; 84-90816A26; 84-93212A1;