On the Bambu Lab A1
Not listed by the maker
Bambu doesn't list this part for the A1. That means Bambu doesn't say either way, not that it won't fit.
1 quote from Bambu Lab, checked 11 October 2026. See the maker's words
SRC 01 Bambu Lab wiki page, visible text
E3D High Flow ObXidian™ Hotend X1C, P1P, P1S