18-3231

Description:

•Upper Drive Shaft Top Cover ScrewKey Features:•3/8-16 x 1 in., 12 point flange headAdditional Details:•For:Mounting MCM thermostat housing, exhaust block-off plate & Alpha/Bravo top coverInterchange:Mercruiser Stern Drive•10-8M0113180•10-98794Mallory•9-78129GLM•28300