Description
The MS21220-4GK is a genuine Textron Aviation bearing — a low-friction pivot or rotational support in an assembly. It is fitted to the Premier Model 390. It carries an export classification of ECCN EAR99.
Because the MS21220-4GK is an original-equipment (OEM) part sourced directly from Textron Aviation, it matches the exact specification and placement called out in the aircraft's type design and maintenance data — assurance a generic substitute cannot offer.
Parts like this are shared across the Beechcraft Premier aircraft, reflecting how much structure and hardware these models have in common.
Bearings and bushings are specified for their load, fit, and motion, so the correct part preserves smooth, reliable operation and expected wear life. Genuine sourcing means the part matches the drawing exactly, so fit and function are known quantities rather than a gamble at installation.
An unapproved or surplus substitute can introduce fit, material, or paperwork problems that surface at the next inspection; the genuine part avoids that risk. On a certificated airframe, part provenance matters as much as the part itself; genuine factory sourcing settles that question up front.
Beechcraft, founded in Wichita, Kansas in 1932, joined Cessna and Hawker under Textron Aviation in 2014, which today supports the worldwide Beechcraft fleet with genuine factory parts. The Beechcraft Premier I was a clean-sheet, composite-fuselage light jet — the first jet Beechcraft designed in-house — supported today through Textron Aviation.
To check availability, request a quote for MS21220-4GK or browse more Beechcraft Premier parts on Flying411.
