---
product_id: 57426928
title: "Heatilator & Heat-N-Glo Propane Gas Pilot Assembly 4021-737"
brand: "heatilator"
price: "VT24605"
currency: VUV
in_stock: true
reviews_count: 8
category: "Heatilator"
url: https://www.desertcart.vu/products/57426928-heatilator-and-heat-n-glo-propane-gas-pilot-assembly-4021
store_origin: VU
region: Vanuatu
---

# Self-cleaning vent holes Reliable LP pilot ignition OEM original HHT part Heatilator & Heat-N-Glo Propane Gas Pilot Assembly 4021-737

**Brand:** heatilator
**Price:** VT24605
**Availability:** ✅ In Stock

## Summary

> 🔥 Ignite your fireplace’s potential with trusted OEM precision!

## Quick Answers

- **What is this?** Heatilator & Heat-N-Glo Propane Gas Pilot Assembly 4021-737 by heatilator
- **How much does it cost?** VT24605 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/57426928-heatilator-and-heat-n-glo-propane-gas-pilot-assembly-4021)

## Best For

- heatilator enthusiasts

## Why This Product

- Trusted heatilator brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable OEM Quality:** Original HHT parts ensure long-lasting performance and reliability over generic alternatives.
- • **Cost-Effective Upgrade:** High performance at under $35, beating pricier competitors with superior wind resistance.
- • **Effortless Maintenance:** Innovative vent holes allow easy cleaning with compressed air—no disassembly needed.
- • **Technician-Grade Design:** Engineered for professionals but valued by savvy DIYers who demand quality and safety.
- • **Precision Fit for Multiple Models:** Compatible with Heatilator, Heat & Glo, and Quadra-Fire fireplaces for seamless replacement.

## Overview

The Heat-N-Glo Propane Gas Pilot Assembly 4021-737 is an original HHT replacement part designed for a wide range of Heatilator, Heat & Glo, and Quadra-Fire gas fireplaces. It features a reliable LP pilot ignition system with self-cleaning vent holes for easy maintenance, ensuring consistent performance even in windy conditions. This cost-effective, durable assembly is favored by professionals and experienced DIYers alike for its precise fit and long-lasting OEM quality.

## Description

HHT, Heatilator and Heat & Glo LP/Propane Gas Pilot Assembly 4021-737 (485-511A) Original HHT Parts. No Generics Replacement propane (LP) pilot assembly for Hearth & Home gas stoves and fireplaces. Fits the following HHT gas fireplace models: Quadrafire Gas Fireplaces: QV32 QV32-A QV36 QV36-A QV36D QV36D-A QV36DB QV36DB-A QVI-30FB QV-Pier QV-ST 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 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 HHT part # 4021-737 Replaces old part number 485-511A OEM Quadrafire part. May fit other models, check your owners manual for part numbers.

Review: Does not drop directly into a Vermont Castings Stardance DV25, but the sellers made no such claims. - I bought this pilot assembly because pilot assemblies for the Stardance DV25 are no longer available and my stove got completely fouled by insects that hatched from acorns that woodpeckers gloriously dropped down the flue. Lesson 1: Don't let those acorns the woodpeckers have blessed you with sit in the stove past the winter. The insect hatch from worms in the acorns will be a mess that will ruin your stove and you will wonder where all the insects in your house are coming from in the summer. If you are skilled with a vice and a Dremel you can open up the two mounting holes/slots and make this unit fit the DV25 stove. Clearances must be such that it drops in without any interference and the screws go in with no effort. You may need to relieve interference between the cast iron and the sheet steel around the ceramic ignitor, but I got it to slip in by suitably slotting the two screw mounting holes. Failing to do that and trying to force it in with the screws will mess up the threads, at least on the screws, don't ask me how I know this. Don't forget to use a new gasket which you may have to cut from appropriate material. Bolted in, this pilot assembly clears the logs as nicely as the original DV25 one. The thermopile that provides electricity to operate the gas valve will hook up to the DV25 stove and in fact will go into the old pilot assembly of the DV25. Don't over tighten this, its only for mounting the thermopile, snug does it. A prior service person over tightened mine and mashed the nut a bit, making it a pain to get out. The thing that is miss-named "thermocouple", but is really more of a thermometer in function: bulb, copper capillary and then the expanding end that actuates the gas valve to keep the pilot lit, is again a direct exchange between the old DV25 pilot assembly and this one. Keep using the old one if it still works and you don't have to worry about making the careful bends of the copper capillary tube to install the new one. Again, don't over tighten this, it is only a mechanical mounting, not a gas connection. Use needle nose pliers to give the push on connection a twist back and forth while pulling the high voltage connection from the piezo device. Break this connection by yanking on the wire itself and you will need a new pilot assembly. Use the same trick with needle nose pliers to push it back on. Don't push it on by the wire, you will mangle the wire. The last item is the gas line for the pilot and that is where the show stopped for me, at least until another time. The dimensions of the sheet steel pilot "hat" are not the same as the DV25 part that you can't get anymore. The new pilot itself seems like a nice design, with a single barrel and two holes at the base to pickup air at the base. The sheet metal pilot orifice from the DV25 will not fit this assembly and the 1/4 inch aluminum pilot line will not be usable with the new pilot. To make it work, you have to pull the 1/4 inch pilot line and see if the new pilot line fitting will go into the gas control valve and seal properly. This required a crow foot wrench I did not have (right now, but I will order same) and I did not want to destroy the old line to get it out and try the new one. The advantage of the new pilot design is that some compressed air applied to the little vent holes at its base will blow it clean without any disassembly. This can save a lot of work if the pilot is fouled. Necessity forced me to look at the old pilot assembly again now that it was out of the stove. Its pilot is two concentric tubes. The outer one brings air down to mix with gas and go up the inner one. Some compressed air and poking cleared it of bug fouling. It went back into the stove and worked fine. Remember to get the sheet metal pilot back in there and check its little hole first for fouling with by shining a flashlight from the back side. The injector that feeds gas to the main burner can also be fouled as mine was. It comes right out and you can clean it of any obstruction. It is right hand thread. I used LOCTITE 577 gas sealant on this part, which matched the hardened sealant that was on it when it came out. Do not over tighten it putting it back in, it is a small brass thread that is easily stripped. A new replacement injector may be available, but then again, maybe not. Lesson 2: With only the possibility that the ceramic mounted high voltage line from the piezo might crack, or the possibility that the connection to the piezo may break if you miss-handle it, the actual pilot unit will likely never go bad. A cleaning and it is as good as new. This goes even for a 25 year old unit. When hooking the pilot line back up sealant on the threads does nothing for you, the gas seal is a metal to metal seal inside the assembly. Tighten it, but there is nothing to swage like a normal compression fitting. Any sealant on the metal to metal seal and you won't get it out the next time you want to service it. The thermopile and the "thermocouple" are available separately at low cost. You need this pilot assembly only if the high voltage line or ceramic mount for the spark electrode is bad. This sort of service is recommended only for very experienced gas heater technicians, and the ones that serviced my stove for the previous owner weren't. I have no complaint at all with this seller. They said what stove the pilot assembly was for and it arrived, promptly, well packaged and in perfect unopened condition. Who knows, I may have to use the sheet metal pilot assembly some day. I would buy from this seller again, and will likely buy another pilot assembly to put away just in case.. *** Disclaimer: I would never trust a gas technician to do this type of work. The fittings on my 25 year old stove indicate that the technicians who worked on it in the past were trainees (at best) who wrenched on things improperly and perhaps didn't know which way to turn the wrench. If you try to do anything described here you might make a mistake, fail to notice a significant problem, and likely catch your house on fire. I am not responsible for that possibility. ***
Review: Works great - Works like it should. At first I tried the kind with the round burner, which cost 3x as much. On windy days it would blow out. No problems with this one. At less than $35, it’s a good value.

## Features

- LP PIlot Assembly
- HHT Pilot Assembly
- 4021-737
- Heatilator, Heat N Glo and Quadra-Fire Pilot Assembly
- Original HHT parts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #1,071,348 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,476 in Fireplace Replacement Parts |
| Customer Reviews | 4.5 out of 5 stars 173 Reviews |

## Images

![Heatilator & Heat-N-Glo Propane Gas Pilot Assembly 4021-737 - Image 1](https://m.media-amazon.com/images/I/71A-0NNaqIL.jpg)

## Questions & Answers

**Q: What is the correct thermocouple i need to buy to replace the one on the heatilator & heat-n-glo propane gas pilot assembly 4021-737 ?**
A: # 2103-512 - Amazon's Choice. It was very easy to replace, I had it completed in about 30".

**Q: Is this compatible with my heatilator lp gas, mod# nd42361, ser# ga1670691 fireplace?**
A: Pre serial number GA1587914 uses 4021-737, Post GA1587914 uses 2103-011. So you need 2103-011.

**Q: Does the thermocouple nut screw clockwise or counter to tighten? I just removed old assembly and got everything on for new except this nut**
A: Clockwise

**Q: Will this fit a heat-n-glo model 7000 xlt?**
A: the replacement number is 485-511a for propane and 485-510a for nature gas

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does not drop directly into a Vermont Castings Stardance DV25, but the sellers made no such claims.
*by E***I on December 24, 2019*

I bought this pilot assembly because pilot assemblies for the Stardance DV25 are no longer available and my stove got completely fouled by insects that hatched from acorns that woodpeckers gloriously dropped down the flue. Lesson 1: Don't let those acorns the woodpeckers have blessed you with sit in the stove past the winter. The insect hatch from worms in the acorns will be a mess that will ruin your stove and you will wonder where all the insects in your house are coming from in the summer. If you are skilled with a vice and a Dremel you can open up the two mounting holes/slots and make this unit fit the DV25 stove. Clearances must be such that it drops in without any interference and the screws go in with no effort. You may need to relieve interference between the cast iron and the sheet steel around the ceramic ignitor, but I got it to slip in by suitably slotting the two screw mounting holes. Failing to do that and trying to force it in with the screws will mess up the threads, at least on the screws, don't ask me how I know this. Don't forget to use a new gasket which you may have to cut from appropriate material. Bolted in, this pilot assembly clears the logs as nicely as the original DV25 one. The thermopile that provides electricity to operate the gas valve will hook up to the DV25 stove and in fact will go into the old pilot assembly of the DV25. Don't over tighten this, its only for mounting the thermopile, snug does it. A prior service person over tightened mine and mashed the nut a bit, making it a pain to get out. The thing that is miss-named "thermocouple", but is really more of a thermometer in function: bulb, copper capillary and then the expanding end that actuates the gas valve to keep the pilot lit, is again a direct exchange between the old DV25 pilot assembly and this one. Keep using the old one if it still works and you don't have to worry about making the careful bends of the copper capillary tube to install the new one. Again, don't over tighten this, it is only a mechanical mounting, not a gas connection. Use needle nose pliers to give the push on connection a twist back and forth while pulling the high voltage connection from the piezo device. Break this connection by yanking on the wire itself and you will need a new pilot assembly. Use the same trick with needle nose pliers to push it back on. Don't push it on by the wire, you will mangle the wire. The last item is the gas line for the pilot and that is where the show stopped for me, at least until another time. The dimensions of the sheet steel pilot "hat" are not the same as the DV25 part that you can't get anymore. The new pilot itself seems like a nice design, with a single barrel and two holes at the base to pickup air at the base. The sheet metal pilot orifice from the DV25 will not fit this assembly and the 1/4 inch aluminum pilot line will not be usable with the new pilot. To make it work, you have to pull the 1/4 inch pilot line and see if the new pilot line fitting will go into the gas control valve and seal properly. This required a crow foot wrench I did not have (right now, but I will order same) and I did not want to destroy the old line to get it out and try the new one. The advantage of the new pilot design is that some compressed air applied to the little vent holes at its base will blow it clean without any disassembly. This can save a lot of work if the pilot is fouled. Necessity forced me to look at the old pilot assembly again now that it was out of the stove. Its pilot is two concentric tubes. The outer one brings air down to mix with gas and go up the inner one. Some compressed air and poking cleared it of bug fouling. It went back into the stove and worked fine. Remember to get the sheet metal pilot back in there and check its little hole first for fouling with by shining a flashlight from the back side. The injector that feeds gas to the main burner can also be fouled as mine was. It comes right out and you can clean it of any obstruction. It is right hand thread. I used LOCTITE 577 gas sealant on this part, which matched the hardened sealant that was on it when it came out. Do not over tighten it putting it back in, it is a small brass thread that is easily stripped. A new replacement injector may be available, but then again, maybe not. Lesson 2: With only the possibility that the ceramic mounted high voltage line from the piezo might crack, or the possibility that the connection to the piezo may break if you miss-handle it, the actual pilot unit will likely never go bad. A cleaning and it is as good as new. This goes even for a 25 year old unit. When hooking the pilot line back up sealant on the threads does nothing for you, the gas seal is a metal to metal seal inside the assembly. Tighten it, but there is nothing to swage like a normal compression fitting. Any sealant on the metal to metal seal and you won't get it out the next time you want to service it. The thermopile and the "thermocouple" are available separately at low cost. You need this pilot assembly only if the high voltage line or ceramic mount for the spark electrode is bad. This sort of service is recommended only for very experienced gas heater technicians, and the ones that serviced my stove for the previous owner weren't. I have no complaint at all with this seller. They said what stove the pilot assembly was for and it arrived, promptly, well packaged and in perfect unopened condition. Who knows, I may have to use the sheet metal pilot assembly some day. I would buy from this seller again, and will likely buy another pilot assembly to put away just in case.. *** Disclaimer: I would never trust a gas technician to do this type of work. The fittings on my 25 year old stove indicate that the technicians who worked on it in the past were trainees (at best) who wrenched on things improperly and perhaps didn't know which way to turn the wrench. If you try to do anything described here you might make a mistake, fail to notice a significant problem, and likely catch your house on fire. I am not responsible for that possibility. ***

### ⭐⭐⭐⭐⭐ Works great
*by S***N on October 30, 2024*

Works like it should. At first I tried the kind with the round burner, which cost 3x as much. On windy days it would blow out. No problems with this one. At less than $35, it’s a good value.

### ⭐⭐⭐⭐⭐ Great part!
*by C***D on December 9, 2022*

Fixed my issue with my fireplace! Watched a couple of YouTube videos on how to replace it. It takes a couple hours for repair because you have to take everything out. Nice to have a working fireplace again.

## Frequently Bought Together

- Heatilator & Heat-N-Glo Propane Gas Pilot Assembly 4021-737
- HHT Gas Fireplace Valve - LP (060-523)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-17*