Rotor Delco EST V6 | Sierra 18-5408 Delco EST V6 Rotor | Sierra 18-5408 Rotor for GM V6 marine engines with Delco EST module-in-cap distributors. Fits GM V6 new style module in cap Delco EST HEI distributors Used with 18-5362 distributor cap Replaces Mercury 850485, 8504851, 898253012, 8M0062084, and 804424 Replaces OMC 3854311 Replaces Volvo Penta 3854311