Hey guys I will be an owner of a 2000 Carver 350 Mariner with twin 5.7MPI Crusader engines next week. I am looking to replace some parts as there was some coolant found in the oil samples. Since the heat exchanger and oil cooler are both 23 years old, I figured I would start there and replace those. The Part number based on the diagram I have for these engines list the heat exchanger as Part no. 98646 for the forward facing. The oil cooler however is confusing me because under the parts diagram it shows two part numbers - 98123 (RWC Only) Raw Water cooling and 98570 (FWC Only) Fresh water cooler only. My understanding is that I have a fresh water cooling system since I have the heat exchanger which contains coolant. However based on the pictures of my engine and the way the existing oil coolers look it seems like I have the 98123 Part number installed. Could someone please provide some advice that is familiar with these engines?
98123 - Part for sale
98570 - Part for Sale
Pics of Engine
98123 - Part for sale
98570 - Part for Sale
Pics of Engine