Thermostat Gasket for 40HP Mariner 40B 40C Outboard 27-814555M Will fit:  2 STROKE: 40B 40C, 1990-1996, 2 CYL Replaces Mercury Mariner Part Numbers: 11756, 27-11756M, 27-814555, 27-814555M, 27-83336M, 814555 If you...