Sierra 18-8847-1 Yamaha Spark Plug Wire Set 4 Wire Set; Kevlar core for maximum durability and long life; Durable stainless steel wound conductor for maximum HP and engine performance; Premium silicone jacketing and boots for ultimate 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: Yamaha Outboard; 67F-82341-00 + 67F-82342-00 + 67F82343-00 + 67F-82344-00; Set Contains: 18-5218-1 Spark Plug Wire (Replaces 67F-82342-00-00); 18-5220-1 Spark Plug Wire (Replaces 67F-82344-00-00); 18-5219-1 Spark Plug Wire (Replaces 67F-82343-00-00); 18-5217-1 Spark Plug Wire (Replaces 67F-82341-00-00);