Sierra Premium Marine Spark Plug Wire Set #18-88041 Replaces Mercruiser OEM: 84-616608Q 61 Mercruiser - 260 TR, 305 LH & RH, 320 EFI, 330 TR, 350 LH & RH, 350 MAG, 420, 454 & 454 MAG, 5.0L & 5.0 I/B & LX, 5.7L, 5.7L I/B & SKI, 7.4L & 7.4L I/B, 8 cylinder, Thunderbolt ignition Magnetic Suppression Core manufactured for your specific application. 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 OE style boots provide a sealed barrier against heat, dirt and moisture Thunderbolt type ignition
