My original equipment was Racor. It uses a S3201T filter which is 10 Micron and 90 GPH. You will also need a bowl RK30051, and a water probe kit RK30964. it fits the 200/300/400/600 series filters. Here is a list of Parker
filters. Parker filters are used on boats, too.
They are a bit hard to find reasonable, I used EBay and TDS Industries.