I took inspiration from an earlier post about fuel selector valve labels and designed a 3D printed option for the Moeller/Sierra/Anderson three-way fuel selector valve. If anyone is interested, I can print and mail you one or send you the file to print your own...or I can bring some to the Friday Harbor 2025 gathering assuming I am able to attend.
My fuel selector valve body protrudes a bit, and a perk of the wider center hole is that it can be slipped over the handle if it is corroded on. I can make some tweaks to the design if yours has starboard/port reversed or you want the center hole sized to the post only.

Compatible fuel selector valve: https://www.fisheriessupply.com/moeller-marine-fuel-valve-three-way-female-nptf-valves/033305-10
Inspiration:
http://www.c-brats.com/viewtopic.php?t=17275
I have a small CNC mill, so if there is enough interest I can mess around with a CNC'd option similar to the one linked in the original thread.
--Shad
My fuel selector valve body protrudes a bit, and a perk of the wider center hole is that it can be slipped over the handle if it is corroded on. I can make some tweaks to the design if yours has starboard/port reversed or you want the center hole sized to the post only.

Compatible fuel selector valve: https://www.fisheriessupply.com/moeller-marine-fuel-valve-three-way-female-nptf-valves/033305-10
Inspiration:
http://www.c-brats.com/viewtopic.php?t=17275
I have a small CNC mill, so if there is enough interest I can mess around with a CNC'd option similar to the one linked in the original thread.
--Shad