A cracked grille or missing cover looks cosmetic until you think about what it was actually doing — usually keeping something expensive protected from something abrasive. Once it's gone, whatever it was guarding takes the hit next.
This is the genuine Nilfisk Advance OEM LID-RECOVERY TANK-NYLON - Replaced: 56115630, part number 56115507, brand new in the box. Genuine OEM covers use the correct material and the correct mounting geometry so they seal, don't rattle, and last.
This part has been replaced by 56115630 - Recovery Tank Lid Kit
Not sure this is the right cover for your machine? Send us the model and serial and we'll match it up.