Product Description

This OEM HHT / Heat N Glo Pilot Assembly that works with many HHT fireplaces (see applicable models below). This is a genuine replacement HHT part that ships new in its original packaging, it it not an aftermarket copy. Please see the bottom of the page for more info on HHT and their representative brands.

HHT Part Number: 4021-737 (Replaces old part number 485-511A)

Part Description: This is a genuine replacement pilot assembly that works many HHT gas fireplaces. The pilot assembly in a gas fireplace ignites the main burner, allowing the fireplace to provide heat. It typically includes a small flame, a thermocouple (which detects the flame and signals the gas valve), and other components for proper ignition and operation.

Applicable HHT Models:

Heatilator Gas Fireplaces:

• NB3630 – Pre Serial # GA1587915
• NB3933 – Pre Serial # GA1587915
• NB4236 – Pre Serial # GA1587915
• NB4842 – Pre Serial # GA1587915
• ND3630 & ND3630L – Pre serial # GA1587914
• ND3630M – Pre serial # GA1587914
• ND3933 & ND3933L – Pre serial # GA1587914
• ND3933M – Pre serial # GA1587914
• ND4236 & ND4236L – Pre serial # GA1587914
• ND4236M – Pre serial # GA1587914
• ND4842 & ND4842L – Pre serial # GA1587914
• ND4842M – Pre serial # GA1587914

Heat N Glo Gas Fireplaces:

• AT-Grand-B
• AT-Grand-C
• AT-Grand-D
• AT-Supreme-B
• AT-Supreme-C
• AT-Supreme-D
• AT-ZC-B – Robert Shaw valve after February 2001
• Bay-Insert-NS
• CFX-Grand-B
• CFX-IN-B
• FB-Grand
• FB-IN
• Bay-38HV
• L-COR-TRC
• L-COR-TVFL
• Pier-38HV
• Pier-TRC
• Pier-TVFL
• R-COR-TRC
• R-COR-TVFL
• ST-38HV
• ST-42TVFL
• ST-TRC
• 6000BE
• 6000CAMP
• 6000SEB
• 6000TRB
• 6000TRI
• 6000TRI-SP
• 6000TR-OAK
• 6000TRXI
• 6000TVB
• 6000TV-Oak
• 6000XLSB
• 6000XLTB
• 7000TR-NF
• 7000TV-NF
• 7000XLS-NF
• 7000XLT-NF
• 8000TRC
• 8000TRD
• 8000TR-Oak – Pre serial # 0021116425
• 8000TVC
• 8000TVD
• 8000TV-Oak – Pre serial # 0021116948
• BE-41
• BE-41B
• Everest – Standing pilot only, pre serial # 5000
• BE-32 – Pre serial # 2107620
• BE-36
• BE-36-C – Pre serial # 0021076020
• SL-350TRS
• SL-350TV
• SL-550TR
• SL-550TR-C
• SL-550TR-D – Pre serial # 0021076206
• SL-550TRS
• SL-550TRS-B
• SL-550TRS-C
• SL-550TV
• SL-750TR
• SL-750TR-C
• SL-750TR-D – Pre serial # 0021076251
• SL-750TRFL
• SL-750TRS-B
• SL-750TRS-C
• SL-750TV
• SL-750TV-C
• SL-950TR
• SL-950TR-C
• SL-950TV

Quadrafire Gas Fireplaces:

• QV32
• QV32-A
• QV36
• QV36-A
• QV36D
• QV36D-A
• QV36DB
• QV36DB-A
• QVI-30FB
• QV-Pier
• QV-ST

Please check your manual, this part may fit other Vermont Castings, Heat n Glo, Monessen & Insta Flame fireplaces as well.

Please Note: This will not replace the mercury bulb type pilot.

Note: Gas and electrical parts are special order and can not be returned.  Please ensure this is the correct part prior to ordering.

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About HHT (Hearth & Home Technologies)

HHT offers a diverse range of hearth products, encompassing gas, electric, wood, and pellet-burning fireplaces, inserts, stoves. They represent many brands, including, but not limited to:

• Heat & Glo
• Heatilator
• Majestic
• Vermont Castings
• Quadra-Fire
• Harman
• SimpliFire
• Monessen
• Stellar
• PelPro
• Outdoor GreatRoom

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This genuine HHT / Heat N Glo Pilot Assembly (4021-737) is in stock and ready to ship!