How to install Mercruiser 4.3 thermostat assembly.(with my granddaughter lol). - YouTube
Thermostat housing kit MerCruiser, marineparts.eu
Mercury | MERCRUISER | 4.3L MPI ALPHA/BRAVO | 0W658583 THRU 0W658583 | Thermostat and Housing, 7 Point Drain - Mercury Outboard Motor Parts - Van's Sport Center