Which motor safety filter does the Eureka 3921A take?

Eureka 3921A vacuum motor safety filter: 37657

Motor safety filter

Filters clog with use. The manual lists how often to change it.

Shop the safety filter on Amazon Other models that use 37657

1Safety filter37657

Part numbers come from the Sears PartsDirect parts list for the Eureka 3921A (view the list), checked November 15, 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.

Other Eureka vacuums

3651B3670AN3671A-13679A3684A3685B4335DTX4336BTH4350BT4351AT