A guy I know has a 1975 Merc 165 with a 250 Chevy I6. His heat exchanger is bad and needs to be replaced. I have taken some pics and am in need of locating a replacement to fix it for him. A part number or resource for finding the number myself would be greatly appreciated. The lower hose points up at approximately 45*. If you can recommend an adaptable part that has only two fresh water and two raw water nipples that would be great too.
