MARKGOO Ignition Coil Assembly 0502881 for Johnson Evinrude outboard 18 20 25 35 40 HP Boat Motor Parts Replacement Sierra 18-5172 0581786 0581124 0581370 it replaces OMC Johnson Evinrude 0502881, 502881, 0581786, 581786, 0581124, 581124, 0581370, 581370. Compitable with Sierra marine 18-5172 Mallory marine 9-23106, GLM mairne 72030. APPLICATION: This guide is to be used as a reference only. You must verify fitment using your model or serial number. Johnson Evinrude 18 HP 1973 Johnson Evinrude 20 HP 1973 Johnson Evinrude 25 HP 1973-1976 Johnson Evinrude 35 HP 1976 Johnson Evinrude 40 HP 1975-1979, 1983 PACKAGE INCLUDED: 1* Ignition Coil 0502881, 0310572 Net Weight : 9.45 oz NOTE: It is VERY IMPORTANT to check outboard model, serial number, year and horsepower before purchase. Ask us any questions if you are not sure, we are pleasure to help you.