Pre-motor filter
A clogged filter cuts suction and makes the motor run hot.
Dirt Devil UD70255: the pre-motor filter is part 440004273. Source: Dirt Devil, checked November 6, 2026.
A clogged filter cuts suction and makes the motor run hot.
1Pre-motor filter440004273Part numbers come from Dirt Devil (source), checked November 6, 2026. Amazon buttons open a search for the part number; we may earn a commission.
On the underside of the body or behind the dust cup.