My 3977A Model Overview from Home Depot Appliance Parts

Part #: HD10351830

Manufacturer Part #: 55794

Part #: HD10351180

Manufacturer Part #: 37657

Part #: HD12027449

Manufacturer Part #: 37966

Part #: HD12623850

Manufacturer Part #: 37710

Exhaust filter

Part #: HD12603990

Manufacturer Part #: 55446

Hex nut

Part #: HD12631132

Manufacturer Part #: 56146

Thermostat

Part #: HD12605084

Manufacturer Part #: 52358B

Vacuum bag, style V, pack of 3

Part #: HD12620220

Manufacturer Part #: 56750

Bag indicator clip

Part #: HD16990899

Manufacturer Part #: 55463

3977A (B) Eureka Canister Vacuum - Overview