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


Application : Flagship, Indmar, Marine Power & Mastercraft - 181, 3.0L, 4 cylinder, conventional ignition. Mercruiser - 120, 140 hp, 2.5L & 3.0L 4 cylinder, conventional ignition. OMC Sterndrive/Cobra - 100 ('72-'73), 110 ('64), 120 ('65-'74), 140 FF & R model ('73-'74), 140 R1 model only ('74-'81) & 140 Jet ('73), 2.5L ('82-'86) & 3.0L ('82-'90), 4 cylinder, conventional ignition
Replaces OEM # : Mercruiser: 84-813720A5, 84-916761Q5. OMC: 503748