Ignition Coil | Crusader R117005 Crusader ignition coil | R117005 fits GM HEI EST type ignition systems. High energy ignition coil for GM 4 cylinder, V6, and V8 engines with Delco EST ignition systems Original Crusader Replaces Crusader 38066, 38079, 7243200 | Replaces Mercury/Mercruiser 898253T27 | Replaces Marine Power 481503 | Replaces OMC/Johnson/Evinrude 3854002 Replaces Volvo Penta 3854002