this is the genuine OEM replacement

which is often beneficial if you have added external accessories like power-hungry smart thermostats or zone controllers

For reliable HVAC part replacement

reducing labor hours during field installations and maintaining factory-spec airflow control performance

Lochinvar & A.O. Smith 100297133 Gasket 320735-701 this is the genuine OEMThe Lochinvar & A. O. Smith 100297133 Gasket is a critical OEM component designed for high temperature sealing between the igniter and the burner mounting plate. In high efficiency condensing boilers like the Lochinvar Knight and Knight XL series (KBX0400 KBX1000), maintaining a gas tight seal is essential for preventing combustion bypass and ensuring precise ignition system performance. This igniter gasket serves as a direct professional grade