I’ve been using NAPA fuel filters for over 20 years in the shop. Their fuel filters are as good as the OEM filters, at about 25% of the cost. One of the concerns about the NAPA filter is that it doesn’t have the same overall outside diameter, creating fitment problems in some Ducks. I simply angle the securing bracket around the center band of the filter.
The gallery picture shows a NAPA filter and an OEM filter. Notice the center ring of the NAPA filter. It is the same diameter as the outside of the OEM filter.
NOTE1: Secure the NAPA filter in the fuel pump assembly of Superbikes and ST models assembly by angling the clamp around the center ring of the NAPA filter.
NOTE2: The MTS1200 and many later models take a smaller filter. The napa fuel filter is incompatible with the MTS1200.
Q: LT, the OEM filter is plastic and the napa filter is steel. Isn’t that a problem if it begins to rust.
A: Actually I prefer a steel filter. If the filter begins to rust that’s a sign that water is in the fuel. If steel rusted inside a fuel bath, all steel tanks would rust out. I shine a flashlight in the gas tank periodically to see if the fuel filter is still shiny. This isn’t possible on all models. Either way, I have these filters in all of my Ducs, and have for decades.