Cooler Core 3974815 of Cummins 6CTA8.3-M188(SO21992) Marine Engine NO. PART NUMBER PART NAME NO. PART NUMBER PART NAME 1 3918174 Gasket, Oil Cooler Core 11 3934278 Valve, Bypass 2 3929011 Gasket, Lub Oil Clr Cover 16 3918334 Head, Lub Oil Filter 4 3974815 Core, Cooler 18 3974324 Cover, Lub Oil Cooler Remarks: (1) We can provide Cooler Core 3974815 engine …