GB20 Parts

We carry all available Napoleon GB20 Gas Fireplace parts. We have blowers, gas valves, thermocouples, thermopiles, glass, gasketing and much more. If you need help locating a part please call, e-mail or fill out our Parts Request Form and we will be happy to assist you.

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  • Napoleon Thermopile (W680-0004) Napoleon Thermopile (W680-0004)
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    Napoleon Thermopile (W680-0004)

    Replacement thermopile for Napoleon gas stoves and fireplaces. Fits the following models: Napoleon Gas Fireplaces: B30 Ascent  B35 Ascent  B36 Ascent  B42 Ascent  B46...
    $51.00
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  • OEM SIT Gas Valve - NG (0820652) OEM SIT Gas Valve - NG (0820652)

    OEM SIT Gas Valve - NG (0820652)

    Replacement natural gas (NG) SIT valve for Enviro, HHT, IHP, Hearthstone, Kozy, Kingsman, Napoleon, and Osburn gas fireplaces, stove and inserts. Specs:Pilot outlet - 7/16 24 UNSThermocouple connection -11/32 ASA Manual Hi-Low Regulator 33%...
    $194.55
  • Napoleon SIT Pilot Tube with Fittings (W720-0062)
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    Napoleon SIT Pilot Tube with Fittings (W720-0062)

    Replacement SIT pilot tube with fittings for Napoleon gas stoves and log sets. Fits the following models: NOTE: Please verify that you have an SIT Pilot Assembly (not a PSE Pilot Assembly) before ordering this part. It may not be compatible...
    $12.00
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  • Napoleon Squirrel Cage Blower (GZ552) Napoleon Squirrel Cage Blower (GZ552)
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    Napoleon Squirrel Cage Blower (GZ552)

    Replacement squirrel cage blower for Napoleon wood stoves and gas stoves and fireplaces. Fits the following models: NOTE: Please be advised that this blower will work with the following models as long as the air flow outlet is mounted vertically. ...
    $249.00
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  • Napoleon Spill Switch (W660-0006) Napoleon Spill Switch (W660-0006)
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    Napoleon Spill Switch (W660-0006)

    Replacement spill switch for Napoleon gas stoves. Fits the following models: Napoleon Gas Stoves: BGNV36 BGNV40 BGNV42 GB20 GI2012 GI2113 GI3014 GI3016 GI3600 GDS28 GDS50 GDS60 GS3500 Napoleon part # W660-0006OEM Napoleon partReplaces...
    $10.00
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  • OEM SIT Gas Valve - LP (0820651) OEM SIT Gas Valve - LP (0820651)

    OEM SIT Gas Valve - LP (0820651)

    Replacement propane (LP) SIT gas valve for HHT, IHP, Kingsman, Kozy, and Napoleon gas stoves, fireplaces, and inserts. Specs:Pilot outlet - 7/16 24 UNSThermocouple connection -11/32 ASA Manual Hi-Low Regulator 25% - LPG Hi=10 (Pi=12 Q=30,000...
    $200.10
  • Napoleon SIT Nova Valve - LP (W725-0026) Napoleon SIT Nova Valve - LP (W725-0026)

    Napoleon SIT Nova Valve - LP (W725-0026)

    Replacement propane (LP) SIT Nova valve for Napoleon gas fireplaces. Fits the following models: NOTE: This is not compatible with units that use the Euro SIT valve. This can be determined if your gas valve has one large knob (Euro SIT) or two...
    $223.00

Why Buy Parts from Mountain View Hearth Products?

We’re the world’s largest source for stove, fireplace, grill, and appliance repair parts. Whether you’re fixing a decades-old wood stove or replacing a worn-out control board on a high-end grill, we make it easy to get the right part — fast.

We stock both original manufacturer parts and high-quality alternatives — so you get the same great fit and performance, often with more affordable options to choose from.

Most sellers only carry the basics like blowers and igniters. We go deeper — with brackets, trim, switches, control panels, gaskets, screws, and more. If your unit has it, chances are, we carry it.