Used in many (not all) Lennox G20, G20R series furnaces. Pilot assembly. Replaces 31J35, 31J3501
FURNACES CONVERTED TO USE WITH PROPANE GAS (LP)
If this pilot burner is being applied to a furnace that has been converted to propane, the pilot orifice will need to be changed. If you are replacing an identical part, you can remove the pilot orifice from your old pilot burner. If this does not apply, a propane pilot orifice will need to be purchased separately for propane applications.