Yamaha - Insert cartridge - 682-44322-40-00Yamaha Insert Cartridge Cooling System Component 682 44322 40 00 Overview This is one of those parts that doesnt get much attention until cooling issues start showing up. The insert cartridge plays a role in directing water flow through the lower unit and keeping the cooling system working the way it should. Ive seen engines overheat just because this piece was worn or not seated right. When its in good shape, water flow stays consistent and the