The Rinnai 205000068 is a genuine Flame Rod for EX38C. Flame sensing rod that proves the burner is lit. Replace when the furnace lights and then shuts down on a flame fault.
This is an OEM Rinnai part, so it fits and performs the way the original did. Confirm your model before ordering; the model is on the rating label on the unit. If you are not sure which part you need, Rural Energy support can check it against your model and serial number.
Rural Energy is a Rinnai distributor and keeps Rinnai direct vent wall furnace parts in stock for fast shipping to dealers, contractors, and homeowners.