Bissell 3920 vacuum filters

Bissell 3920: the pre-motor filter is part 3290, and the post-motor filter is part 99K11. Source: Bissell, checked November 6, 2026.

1Pre-motor filter3290

Part numbers come from Bissell (source 1, source 2), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.

Where the model number is

On the underside of the body or behind the dust cup.