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Heat N Glo Pilot Assembly (Natural Gas) | 446-510A / SRV446-510A | Aftermarket Replacement for Gas Fireplaces
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Pilot Assembly – Heat N Glo (Natural Gas) | 446-510A / SRV446-510A | Aftermarket Replacement for Gas Fireplaces
LP Gas Version is part number 4021-737
Restore safe and consistent ignition to your natural gas fireplace with the 446-510A Pilot Assembly. Designed as an OEM-style replacement for Heat-N-Glo part number 446-510A, this complete millivolt-compatible assembly delivers long-lasting performance, dependable flame control, and precise ignition for residential hearth systems.
Key Features:
• Direct OEM Replacement – Compatible with Heat-N-Glo SRV446-510A
• Designed for Natural Gas (NG) – Calibrated specifically for NG systems (not LP)
• Millivolt System Ready – Supports standing pilot ignition configurations
• Complete Assembly – Includes pilot burner, thermocouple, and connector leads
• Safe & Reliable Ignition – Ensures consistent startup and steady flame performance
Specifications:
• Gas Type: Natural Gas (NG)
• Ignition System: Millivolt (standing pilot)
• OEM Brand: Heat-N-Glo
• Replaces OEM #: 446-510A
• Also Known As: SRV446-510A, PH-510
• SKU: NBK-21240
Cross Reference
Manufacturer part-number references. Confirm the required replacement part number for your appliance before ordering.
- Heat-N-Glo: 446-510A / 060-514A / 25121 / 25729 / SRV446-510A / SRV25121 / SRV60-514A
- Heatilator: 25121 / 446-510A / 060-514A / SRV446-510A / SRV25729 / SRV25121 / SRV60-514A
- IHP: 901047 / H2328
- Ironstrike (IHP): 901047 / H2328
- Kozy heat: 700-055
- Lennox: 901047 / H2328
- Quadrafire: 25121 / 25729 / 446-510A / SRV446-510A / SRV60-514A
- Superior (IHP): 901047 / H2328
Alternate reference already listed for this replacement: PH-510
Fireplace Models
Natural gas (NG) standing-pilot systems only. Not for LP/propane systems. Confirm the pilot assembly number, tubing length, connectors, mounting geometry, and ignition system before ordering.
Expand a brand below to view model and manual-reference entries. These entries include grouped model names and repeated manual references and do not guarantee fit for every version. Confirm your exact model, serial number, production date, fuel type, electrical and control-system specifications, and required replacement part number against the appliance service manual before ordering.
Heat-N-Glo (43 entries)
- 6000GDVFL-NF
- 6000GDVFL
- 6000XLS
- 6000XLT
- TOWNSEND II
- TOWNSEND I
- L-CORNER-TR, L-CORNER-TR-DSI
- 8000DVTFL
- BAY-GDV-95
- PIER-TR
- SL-32
- SL-32GDV
- SL-36-NF
- SL-36S
- SL-42
- 6000XLS-NF
- 6000TR-NF
- 6000XL
- 6000XLT-NF
- 6000FLS
- 6000TR-NF-DSI
- 6000DVTFL
- SL-42DVT
- ST-TR
- BAY-STOVE
- ATS-AU-D
- SL-36GDV
- 6000XLTB
- AT-GRAND
- BAYFYRE-TRS
- DVT-STOVE
- L-COR-TR
- L-COR-TRC-CE
- R-COR-TR
- SL-3000
- SL-32S
- SL-36
- SL-36-DSI
- R-4500
- 8000TR
- AT-SUPREME
- 8000GDVFL
- SL-36TV
Heatilator (9 entries)
- GC400SF
- GC300STE
- GC300FLLE
- GC300FLE
- GC300ST
- GC300FL
- GC500CL
- GC500CLL
- GC500CRL
Kozy heat (64 entries)
- 942 10-99
- Lakefield 10-01
- Lakefield Okabena 8-02
- 942 10-03
- 932-936 Manual 03-04
- 942 2-03
- Windom 8-03
- 944 8-02
- KLS 2000 10-99
- Lakefield Okabena 4-04
- 911 Manual 1-00
- 932-936 Manual 7-00
- 911XL Manual 8-01
- 911XL Manual 10-03
- Chaska CSK-31 (4-10)
- 55801 Duluth
- Lakefield Okabena 6-04
- SP36 4-01
- 961 6-02
- 944 10-03
- 932-936 Manual 9-02
- 932-936 Manual 10-03
- 911 Manual 6-98
- 56701 Thief River Falls - TRF
- St Paul 7-03
- SP36 11-02
- 961 2-03
- 942 3-04
- 932-936 Manual 5-03
- 911XXL Manual 2-04
- 911XL Manual 2-04
- 911 Manual 4-04
- 811
- 56701 TRF 9-04
- Lakefield Okabena 10-03
- SP36 4-04
- SP36 10-03
- 944 9-01
- Lakefield Okabena 7-03
- Lakefield 9-00
- 961 7-01
- 961 10-03
- 942 7-01
- 932-936 Manual 9-02 7-01
- 911XXL Manual 8-02
- 911XL Manual 5-03
- Chaska 4-10
- 911 Manual 7-03
- 811 Manual 1-98
- SP36 5-03
- 56701 TRF 8-04
- 911 Manual 10-03
- 55801 Duluth 3-04
- 961 2-04
- 911 Manual 8-01
- 944 3-04
- 936 5-98
- 911XXL Manual 8-03
- Sundance II 744
- Windom 3-04
- KH36 TRS 5-04
- 55801 Duluth 7-03
- SP36 11-01
- 944 9-04
Lennox (1 entry)
- DVR-6000
Quadrafire (1 entry)
- DV-750
Superior (IHP) (1 entry)
- DVR6
Important Fitment Note:
* This pilot assembly is designed for natural gas systems only. It is not compatible with LP (liquid propane) models. Always verify your original part number and gas type before ordering to ensure proper fit and safety.
Why Choose Our NG Pilot Assembly?
This OEM-equivalent pilot assembly restores reliable ignition performance and flame stability while meeting the quality standards of high-efficiency gas fireplaces. Perfect for maintaining safety, warmth, and consistent operation in your home’s hearth system. Order the 446-510A Pilot Assembly today for dependable ignition and long-lasting performance.