Mercury 87774A1 Outboard Power Trim Tilt Pump Black Cover Plastic Hose Routing Heads Basically this would have been

Basically this would have been found on MerCruiser Gen I Transom assemblies 1983-1990 (square gimbal ring / square steering lever)  (Just confirm with your parts diagram)

With electric choke

MerCruiser 62234A2 / 62234 (Stamped) Valve Rover Cover (Aluminum)

330hp GM 454 V-8 1977-1981 4623115 THRU 6083144

11-53916 Nut Wingnut

Mercury 87774A1 Outboard Power Trim Tilt Pump Black Cover Plastic Hose Routing Heads Basically this would have beenPart Number(s) Included 87774A1 Inlet Outboard Transom Cover (Black Plastic) General Application Compatibility For all power trim cylinder equipped inline engines using a remote power trim pump (Mercury Mariner) Wide variety of outboards If you have a remote prestolite pump, then these are what you would generally find with those applications. Not used with engines that have the trim motor mounted on the transom between the clamp brackets. Other