Replacement natural gas (NG) IPI pilot assembly for Heat N Glo, Quadra-Fire, and Heatilator gas fireplaces. This is an IPI pilot assembly, does not work with DSI, HSI or standing pilot units. Fits the following models:

Quadra-Fire Gas Fireplaces:

• QV36A-FB (Expression) - Pre February 2006

Heatilator Gas Fireplaces:

• BCBV36I - Pre serial # GA1551065
• GCDC60i - Post serial # GA1548727
• GCDC60Li - Post serial # GA1548727
• GCDC80i
• GCDC80Li
• NB3630I
• NB3630MI
• NB3933I
• NB3933MI
• NB4236I
• NB4236MI
• NB4236IPLUS
• NB4236ILPLUS
• NB4842I
• NB4842MI
• ND3630I
• ND3630IL
• ND3630MI
• ND3933I
• ND3933IL
• ND3933MI
• ND4236I
• ND4236IL
• ND4236MI
• ND4842I
• ND4842IL
• ND4842MI

Heat & Glo Gas Fireplaces:

• 6000BE-IPI
• 6000TRI-IPI - After serial # 002324002
• 6000TR-OAK-IPI - After serial # 002324002
• 6000TRXI-IPI - Pre serial # 002952047
• 6000TV-OAK-IPI - After serial # 002324021
• 6000PLUS
• 8000CF-OAK-IPI - Pre serial # 002927628
• 8000TRD-IPI - After serial # 002324001
• 8000TR-OAK-IPI - Pre serial # 002927628
• 8000TVD-IPI - After serial # 002324001
• 8000TV-OAK-IPI - Pre serial # 002927628
• BCBV36I - Pre serial # GA1551065
• SOULSTICE
• SL-550TRS-IPI-D - Pre serial # 0021077066
• SL-750TRS-IPI-D - Pre serial # 0021077066

HHT part # 4021-422
Replaces old part number 4021-025
OEM HHT part 

May fit other models, please check your owner's manual for part number compatibility.