Part # 18-4697 what is this used for. all my coolant leaks from here causing overheat. is it hollow and won't close off when tightened and a plug is suppose to go in it's location when not trying to drain block?
This is a drain tap located at the engine cooler. It is for Volvo Penta models D40, 2001, 2002, 2003 V6, B23, B25, D30, D31, D40, and D41.