LEVER (P/N 12-b57) - New Surplus

The 12-b57 is a throttle lever for Marvel-Schebler MA-3 and MA-4SPA carburetors. This mechanical component connects the throttle shaft to external control linkage, enabling pilot-controlled engine power modulation. Constructed from durable aluminum or steel, the lever transfers manual input from the cockpit throttle control to the carburetor's throttle valve.

Installation requires proper rigging per the aircraft maintenance manual to ensure smooth throttle response and full range of motion. Commonly included in Marvel-Schebler carburetor repair kits for piston engine aircraft.

What is the LEVER (P/N 12-b57)?

The 12-b57 is a throttle lever for Marvel-Schebler MA-3 and MA-4SPA carburetors. This mechanical component connects the throttle shaft to external control linkage, enabling pilot-controlled engine power modulation.

What conditions is the 12-b57 available in?

The 12-b57 is currently available in the following conditions: New Surplus. Each condition reflects the part's maintenance history and certification status per FAA standards.

How do I get pricing for the 12-b57?

The 12-b57 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.

Do you offer expedited shipping for the 12-b57?

Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.