Product Description

This replacement HHT /  Pilot Assembly that fits many HHT fireplaces.  HHT manufacturers Heat & Glo, Heatilator, Quadrafire, Harman, Vermont Castings, Majestic, Dutchwest, Monessen and Simplifyre.  This is a genuine HHT part that comes in original packaging – this is not an after-market product.

Part Number:  4021-736 (Replaces 485-510A)

Part Description: Replacement Pilot Assembly for for many gas fireplaces, stoves and inserts

Applicable 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 note this will not replace the mercury bulb type pilot

Also fits many different manufacturers

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

Also used on Napoleon, Enviro, Regency and other manufacturers

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

If your part is not listed on our website, please contact us and we would be happy to help try and source it!

Please note: These parts are special order and can not be returned.