Sierra 18-8811-1 Wiring Plug SetFor all 4 Cyl. engines with a digital ignition system. Used on Mercruiser and OMC marine engines. Kit includes 5 wires.Key Features: Kevlar core for maximum durability and long life; Durable stainless steel wound conductor for maximum horsepower and engine performance; Premium silicone jacketing and boots for the ultimate in high temperature protections; Superior RFI suppression for the most sensitive electronic system; Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity; Specifications: Ignition Type: EST Electronic; Cyl.: 4; Set Wire Length: (2) Spark Wires 10", (1) Spark Wire 14", (1) Spark Wire 20", (1) Coil Wire 12"; Interchangeable with: Mallory; 9-28004; 9-28028; Mercury Marine; 84-813720A13; 84-816761Q13; OMC Stern Drive; 503749;