Well, it has the 3/4-16 thread. It would depend on how big the mating surface is on your engine. The gasket isn't the same size as the FL1A type. The gaskets on most of this thread filter run around 2.4 ID to 2.8 OD. Yours runs 2.4 OD and 2.2 ID.
Part Number: 51396
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.475 2.173 0.233
The FL1A size:
Part Number: 51515
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.834 2.462 0.200
If you've got 0.2" of surface to work with a FL400S might work. It's just slightly bigger then the gasket (2.9") and almost as long as the FL1A
