You can send a request for quote for p/n 520C to Power Air Consulting using powerairconsulting.com. This part is manufactured by B And K Precision Corporation. The description of it is Tester Transistor. The national stock number associated with this part is 6625010803471. This part belongs to part family. An associate from Power Air Consulting will respond within 15 minutes to your query. It is our pleasure to help you with 520C part requirements.