Pilot Assembly – Propane (4021-733 / 25661 / 20921) for Heatilator & Heat N Glo Fireplaces

Pilot Assembly – Propane (4021-733 / 25661 / 20921) for Heatilator & Heat N Glo Fireplaces

Restore consistent ignition and safe operation in your propane-fueled fireplace with this OEM-equivalent LP pilot assembly for Heatilator and Heat N Glo models. The 4021-733 assembly includes a thermocouple, thermopile, 4" ceramic electrode, and pilot tubing—everything you need for a complete replacement. With a 24" lead, this propane pilot is built for precise fitment and dependable flame control.

Key Features:

• Complete Assembly – Includes thermopile, thermocouple, 4" ceramic electrode, and pilot tubing
• Propane (LP) Compatible – Specifically designed for LP gas systems
• OEM Equivalent – Replaces part numbers 4021-733 and 25661 (previously 25660)
• Reliable Ignition – Ensures consistent spark and flame for safe, automatic operation
• Extended 24" Lead – Offers flexible installation options for most fireplace configurations

Specifications:

• Part Numbers: 4021-733, 25661, 25660, 20921
• Fuel Type: Propane (LP)
• Electrode Length: 4" ceramic igniter
• Lead Length: 24 inches
• Components Included: Thermocouple, thermopile, pilot tubing, ceramic electrode
• OEM Status: OEM-equivalent replacement part
• Sold: Individually

Compatible With:

• Heatilator Fireplaces
• Heat N Glo Fireplaces
• Other HHT (Hearth & Home Technologies) Models using LP pilot assembly 4021-733 or 25661

Note: Always verify your model and part number in the owner’s manual before purchase to ensure compatibility.

Why Choose This Pilot Assembly?
Replace your worn or damaged pilot assembly and ensure safe, efficient ignition with the 4021-733 Propane Pilot Kit. Designed for Heatilator and Heat N Glo LP models, this complete assembly delivers long-term performance and reliable startup. Perfect for technicians and DIY installers alike.

Heatilator Gas Fireplace Compatibility:

• GCDC42, GCDC60, GCDC80, GDCH36, GDCL60, GDCR60, GDFL36, GNBC33, GNBR33, GNDC30, GNTC50, GNRC36, GNDR30, GNDH33, GNRH36, GCBC42, GB4942, and many more
• Models including GB4336, GBST36, GBIS36, GNBR30, GNDR33, GNDC36, GNDC33, GCDC80E, GNBR36, GNDR36, GNDR30, GNRC33, GNRC36, GNBC36, GBCL36, GC150, GCBC36, GBCR36, GBFL36, and additional listed units
• Refer to owner’s manual for specific fitment and part compatibility

Heat N Glo Gas Fireplace Compatibility:

• Palazzo See-Through (ODPALGST-48)
• 6000GDVFL-NF

Majestic Gas Fireplaces:

• 36CDVX Tribute

Quadra-Fire Gas Fireplaces:

• DV400, DV425, DV450, DV750, DV750 (Pre and Post SN 3196)
• Sapphire 50 (DV450)
• Twilight II-B

Cross Reference: Heatilator 4021-733 / 25661 | Old Part Number: 25661 | New Part Number: 4021-733

This propane pilot assembly ensures consistent ignition, stable flame, and safe operation—restoring performance and reliability to your Heatilator or Heat N Glo fireplace. Order yours today for long-lasting quality and peace of mind.