Here are two Thermocouples for Quadrafire pellet stoves witha longer and a shorter wire lead. Consult the free parts list on our web site www.WoodHeatStoves.com to determine which one you need to order. Owners and Technical Service manuals are also available for download on our web site. Here are part numbers for these two: 812-4470 & 812-0210 We also have Quadrafire Thermocouple covers which are commonly replaced parts when replacing these thermocouples. Email us at info@WoodHeatStoves.com if you need further assistance.