Is this a direct replacement for older Trane heater models

the Open High action (P70CA models) is typically used for capacity control or as a high-pressure cutout

Measure the probe length of your existing L260-30F switch to ensure it reaches the correct position within the airflow path for an accurate temperature reading

Complete Kit: Ships with the 21D64-2 nitride ignitor

Nordyne 624494R Gas Valve 30067439-890 Is this a direct replacementThe Nordyne 624494R Gas Valve is a critical OEM component designed for high efficiency natural gas furnaces and heating units. This 24V slow open gas valve is engineered to deliver a controlled manifold pressure of 3. 5" WC, ensuring smooth ignition and stable burner performance. As a direct 48G30 replacement valve, it maintains factory specifications for safe terminal connections and port alignment, streamlining the swap out process for field