Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 793Get this manual
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COLLECTORS
Transom Exhaust KitScrew And Nut (4)Support MemberWater Shutter (Hinge Must Be Vertical)GasketExhaust FlangeBolts, Washers and Nuts (3)ClampCover (Flapper)