SWITCH, ELECT. DIFF. PRE (P/N 623179) - New Surplus

The 623179 is an electromechanical differential-pressure switch that monitors filter inlet-to-outlet pressure drop in aircraft engine oil and fuel systems. When filter blockage reaches a critical threshold, the switch changes state to trigger a cockpit FILTER/BYPASS annunciation, alerting pilots to filter condition. Install the switch to the filter assembly's differential ports and wire per aircraft maintenance manual specifications.

Essential for engine protection and filter service life monitoring.

What is the SWITCH, ELECT. DIFF. PRE (P/N 623179)?

The 623179 is an electromechanical differential-pressure switch that monitors filter inlet-to-outlet pressure drop in aircraft engine oil and fuel systems. When filter blockage reaches a critical threshold, the switch changes state to trigger a cockpit FILTER/BYPASS annunciation, alerting pilots to filter condition.

Is the 623179 compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The SWITCH, ELECT. DIFF. PRE is available in: New Surplus. We recommend checking your aircraft's wiring diagrams and STC documentation, or contact our avionics team for compatibility assistance.

Does the 623179 come with an 8130-3 airworthiness tag?

Availability of an FAA 8130-3 tag depends on the part condition. Overhauled and repaired units typically include 8130-3 documentation. As-removed units may include a removal tag with trace history. Contact us for specific documentation on the condition you need.

Do you offer bench testing for the 623179?

We can arrange bench testing through our network of FAA-certified repair stations. Call (904) 998-9101 for testing availability and turnaround times, or submit an RFQ with your specific requirements.