NAPA Gold 3032 will fit, but consider this:
The concern is with abrasive wear of the fuel injector's moving components and damage to the injector valve seats by particles in the fuel (i.e., not plugging of the injector nozzle). Fuel injector nozzle orifice sizes are 50–100 microns.
Knecht/Mahle KL 145 is the Ducati OEM filter. Filtration efficiency: 10 micron particles.
Wix 33032 NAPA Gold 3032. Filtration efficiency: 20 micron particles
So, the Ducati fuel filter removes particles twice as small as the NAPA 3032.
Also, a comparison of the size of the external casings indicates that the OEM filter contains more filter medium so it can also hold more contaminants before needing replacement (to avoid excessive fuel pump electrical power requirements). Consequently, the smaller filter catches fewer particles but may need to be changed more often than the Ducati maintenance schedule — makes price comparisons with the OEM filter uneven.