Sale!

HHT / Heat N Glo Pilot Assembly – NG (4021-736/485-510A)

Original price was: USD $208.02.Current price is: USD $183.40.

Non-returnable

Product Description

This is an OEM HHT Pilot Assembly (in natural gas) that fits many HHT fireplaces (see applicable models below).  This is a genuine HHT replacement part that ships new in its original packaging, it is not an aftermarket copy.

HHT Part Number: 4021-736 (Replaces old part number 485-510A)

Part Description: Replacement Pilot Assembly for for many gas fireplaces, stoves and inserts. Pilot assembly complete with thermocouple (24″ long Fast acting,) thermopile, sparker electrode, and pilot tubing

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 note this will not replace the mercury bulb type pilot


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

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

This genuine HHT / Heat N Glo Pilot Assembly – NG (4021-736/485-510A) is in stock ready to ship

Shipping Dimensions

Weight1 lbs
Dimensions9 × 7 × 3 in

Replacement parts come with a 90 day warranty unless otherwise stated.


All gas and pellet components must be installed by a licensed technician.
All electrical components, regardless of fuel type, must be installed by a licensed technician.
Warranty claims for any gas, pellet, or electrical components will not be accepted without a valid installation receipt.


Please contact Online Store Support with any warranty questions.

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