Sierra 18-2614 Outdrive Gasket SetSierra replacement outdrive gasket set for MerCruiser Stern Drives. Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements.Fits: MC-I drives (s/n 6225576 & below) (1967-1982)Set Contains: (1) 18-2820 Outdrive Gasket; (1) 18-2840 Bell Housing Gasket; (2) 18-7153 O-Ring; (1) 18-7170 O-Ring; Interchangeable with: GLM; 39590; Mallory; 9-62602; 9-62602-25; MerCruiser Stern Drive; 27-45821; 27-64818; 27-64818A1; 27-64818A20; 27-64818A4; 27-64818Q4; 27-64818T4;