Marine Ignition Coil for Mercruiser OMC Volvo GM Engines Replaces: Mercruiser 898253T27 (Older 817378T), OMC 3854002, Volvo 3854002-7, Crusader 7243200, and some Marine Power engines. This marine ignition coil is used on Delco EST ignition systems. It generally fits all GM Inline 4, V6 an V8 applications with Delco EST systems (3.0L, 5.7L and 7.4L). Some Mercruiser applications include (not a conclusive list!): 4.3L EFI 262 Mag (TBI) from 1996-1998, 350 MAG Bravo MPI 350 MAG MPI MIE 350 MAG EFI SKI Black Scorpion and Black Scorpion Ski 377 Scorpion MCM and SKI 454 EFI, MAG, MPI and Horizon MIE Please make sure you verify this is the coil you need by part number. Color of coil potting or base may vary. If you have a question regarding your particular application, please contact us!