Dan, you have standard 11/16" threads on your filter housing. The Racor PN for 2-micron filter is S3220SUL. I bought 4-from Green Marin in Houston for about $20 each. You will need a bowl. It's a one time purchase and reused when replacing the elements. I don't like the clear plastic bowl with the spring loaded drain and went ahead and bought an aluminum bowl with a drain bolt, PN RK30473-02 Think is was about $30. The plastic bowl is a lot cheaper. Yea, it's an expensive fuel filter but get bit in the ass with dirty fuel and :bang.
If you want to loose a little sleep tonight get on THT forum and search "HPDI Mystery Filters" The thread got so long that they started a "Part 2". There are about 4-6 filter screens in various places on the HPDI's that clog. Problem is the best Yamaha filter is 10-microns and all those screens are 2-microns. The ethanol starts cleaning your 12-year old tank and well, you know the rest. Might want to also search 2-micron Racors and I think you'll see most guys with HPDI's are running 2-micron fuel seps. I really love the HPDI's and wish I had a pair but they are real sensitive to clean fuel.