Sierra International 18-5231-1D Marine Spark Plug Wire 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 protection Superior RFI suppression for the most sensitive electronic system Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity 9 Spark Plug Wire Before Ordering, Please Verify this is the Correct Part for your Application. For Assistance, Please Call Sierra's Tech Support at 1-877-663-8396