SEI MARINE PRODUCTS- OMC Cobra Anode 3853818 4.3 5.0 5.7 5.8 Liter Gearcases 1986-1993 This anode replaces OE#: 3853818 and fits OMC Cobra V4/ V6 4.3L, 5.0L, 5.7L, and 5.8L gearcases from 1986-1993.