Thermostat/Poppet Cover Gasket for Mercury/Mariner Outboard 27-8128671 For Thermostat  MERCURY MARINER 40-60 hp 2 stroke 50, 55, 60 hp 3Cyl 2stroke 40 JET, 45 JET Replaces for Mercury 27-812867-1, 27-8128671, 27-812867A97, 27-828553A97, 812867,...