Harman Accentra and Invincible Insert, Super Magnum Stoker Distribution Blower, 3-21-47120

SKU 3-21-47120
MPN 3-21-47120
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Frequently Bought Together


This is the complete distribution fan assembly with motor, fan wheel, and housing for the INvincible and Accentra Pellet Inserts and The Harman Magnum Coal Stoker.

For the Invincible Insert and Accentra Insert, only the motor and fan will fit into the insert as the original housing is welded in. This entire assembly can be replaced on the Harman Coal Stokers.

Harman Product Bulletin: March 15, 2011

The replacement blowers for the Super Magnum Stoker, Invincible, and Accentra pellet inserts are now one-speed blowers. Previously these replacement blowers were three-speed with two speeds made inactive. (Red and Blue not connected) All production models beginning with serial number 008600509 for the Super Magnum Stoker and serial number 008248445 for the Accentra pellet insert have been changed to the one-speed blower. This new wiring is invisible to the consumer since it still only operates at one speed like it always had.

Installation requires two (2) 1/4" female wire terminals (not included) to be crimped to the wire leads at the time of installation.

Our old part number 12189-M

*If the serial number on your Harman Invincible Insert falls between serial number 1556 - 2128, this blower is not compatible with your stove. During that time Harman was using part number 3-21-08619. This part is now obsolete.

Replacement For Part Number:
  • 3-21-47120

Click To See Compatible Models

Compatible Models


  • Accentra Insert
  • Invincible Insert (2128 - 1556 )
  • Super Magnum Stoker

    Legacy Stoves

  • Super Magnum Stoker

Technical Specs

Volts 115
Cycles 60 HZ
Amps 1.95
RPM 1360
CFM 180
Wiring Connectors 2 QTY
¼" female
not included


Assembly Instructions For Harman Accentra and Invincible Insert, Super Magnum Stoker Distribution Blower, 3-21-47120

Access to these motors can be tricky as they are located under the unit itself se diagrams below.