Sierra 18-8818-1 Premium 12" Spark Plug Wire for Johnson/Evinrude OutboardsSierra high-quality spark plug wires feature a Kevlar core for maximum durability and long life.Size: 12" Durable stainless steel wound conductor for maximum horsepower and engine performance; Premium silicone jacketing and boots for the ultimate in high temperature protection; Superior RFI suppression for the most sensitive electronic system; Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity; Interchangeable with: Johnson/Evinrude Outboard; 582365;