Outdrive Gasket Set for Mercruiser 27-64818Q4 27-64818A1, GLM 39590 - Sierra
Replaces OEM part #
(1) 18-2840 Bell Housing Gasket - replaces O.E. # 27-35982
(2) 18-7153 O-Ring - replaces O.E. # 25-25439
(1) 18-7170 O-Ring - replaces O.E. # 25-33504
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