Mark 123 Series Parts

The Heatilator Mark 123 was introduced in 1968 and became the biggest selling masonry form in the industry. The Mark 123 fireplaces included many model versions.

We can get all parts currently available for the Mark 123 wood fireplaces. Any Heatilator part that is listed on our site is typically stocked, if you do not see the part you are looking for we can order it in. If you can not find the part you are looking for please call, e-mail or fill out our Parts Request Form and we will be happy to assist you.

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  • HHT High Temp Red Silicone (SIL-HT-RED)
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    HHT High Temp Red Silicone (SIL-HT-RED)

    Replacement high temp red silicone for HHT gas, pellet, and wood stoves. May fit many models, please check your owner’s manual for part number compatibility. NOTE:  Due to DOT regulations, this item cannot be shipped by air and must...
    $13.00
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  • HHT Grate Assembly (GR40)
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    HHT Grate Assembly (GR40)

    Replacement grate assembly for Heat N Glo, Heatilator and Outdoor Lifestyles wood fireplaces. This part measures 21-9/16" x 10-1/2" x 6-3/4". Fits the following models:Heatilator Wood...
    $169.00
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