PLUG,DRAIN (P/N b148) - New Surplus

The b148 is a drain plug designed to seal service ports and enable controlled fluid drainage during aircraft maintenance. Installed at engine oil sump drain points with a crush washer meeting AN900 (MS35769) specifications, it provides a secure closure that prevents leakage during operation. Removal allows technicians to drain oil for scheduled servicing and contamination inspections.

Installation requires torque per the aircraft maintenance manual with washer replacement as specified. Common on general aviation and light aircraft engine installations.

What is the PLUG,DRAIN (P/N b148)?

The b148 is a drain plug designed to seal service ports and enable controlled fluid drainage during aircraft maintenance. Installed at engine oil sump drain points with a crush washer meeting AN900 (MS35769) specifications, it provides a secure closure that prevents leakage during operation.

Is the b148 compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The PLUG,DRAIN 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 b148 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 b148?

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.