Key Features: 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 Additional Details: Ignition Type: Conventional Cyl.: 8 Cross References OMC Stern Drive 503752 OMC Stern Drive 503755 CDI 631-0001 Mercruiser Stern Drive 84-43376A9 Mercury Marine 84-813720A10 Mercury Marine 84-813720A9 Mercury Marine 84-816761A9 Mercury Marine 84-816761Q10 Mercury Marine 84-816761Q9 Mallory 9-28000 Mallory 9-28010 Mallory 9-28012 Mallory 9-28021 Fitment Information Johnson/Evinrude 25 HP 1997-1997 125hp 2 stroke 2 cylinders Mercruiser 233 FORD 351 1975-1977 4 stroke 8 cylinders 233 MIE FORD 351 1975-1976 4 stroke 8 cylinders 370 TRS GM 454 1978-1985 4 stroke 8 cylinders 400 TRS GM 454 1980-1986 4 stroke 8 cylinders 440 TRS GM 454 1983-1986 4 stroke 8 cylinders 460 TRS GM 1983-1986 4 stroke 8 cylinders 482 cid