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Our Part No.: RPW2000479

Manufacturer Part Number:SSN21

Product Condition: New

This is a Generic replacement part

Designed for:
Sealed Unit Corporation SUPCO

The 75M21 Igniter is used on Lennox® furnaces.


  • Easy fit
  • Drop-in Replacement
  • See Cross Reference tab for additional numbers

Igniter Material: Silicon Carbide
Steady State Current: 3.0 to 3.6 Amps Maximum @ 115 Volts 
Resistance: 50 to 1100 Ohms
Time to temperature: <17 seconds @ 115 +/? 1.0 VAC 
Minimum Temperature: 1800°F / 980°C @ 98 Volts 
Maximum Temperature: 3100°F / 1705°C @ 132 Volts 

Replacement Part:483396
Part Description
Manufacturer :Coorstek®

Replacement Part:75M21
Part Description
Manufacturer :Lennox®

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