Premium 4cyl Spark Plug Wire Set by SierraFeatures: Cyl.: 4; Used on MerCruiser and OMC 2.5L and 3.0L marine engines.; Kit includes coil 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.; Lengths: (3) Spark Plug Wires 13" long; (1) Spark Plug Wire 19" long; (1) Coil Wire 13" long; Replaces: MerCruiser; 84-816761Q4,Q5,K4; Mallory; 9-28020; OMC; 0503748;