Fluid vessels on a floor machine take a lot of quiet abuse — bumps, weight cycles, chemistry exposure, hot fills. They crack around fittings, they warp at the lid, they stress at the mount points. And once they leak, cleanup is on your to-do list every morning until they're replaced.
This is the genuine Nilfisk Advance OEM WATER TANK ROTATION SHAFT KIT, part number VV81085, brand new in the box. Genuine OEM material is spec'd for the chemistry it holds and the pressure it operates at. Aftermarket "compatible" tanks tend to age hard.
Not sure this is the right tank for your machine? Send us the model and serial and we'll match it up.