I have goodman A30-10 furnace and one of the two heating elements is bad and the sequencer isn't working. Does anyone know the part numbers for the replacements and a good place to find them cheap online?

Thanks.

Air Handler Sequencer Time Delay Blower Relay.(Amana, Goodman): American HVAC Parts

Goodman Parts - Available Products

Use Google as a search engine to find the parts you need. The above are just examples.