Description
The MS21151-8G is a genuine Textron Aviation bearing — a low-friction pivot or rotational support in an assembly. It is applicable to the Citation X. It carries an export classification of ECCN 9A991.
Because the MS21151-8G 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.
Because the Cessna Citation aircraft share extensive structure and hardware, a single part like this is often common across several variants.
A bearing or bushing sets how a shaft or pivot moves and wears; the right part keeps that motion as designed. OEM parts arrive to the specification the type design was certified against, preserving both airworthiness and the airframe's documented configuration.
Because substitutions on type-certificated aircraft require approved data, the genuine part is the straightforward, compliant choice for this application. Traceable OEM hardware keeps an aircraft's maintenance records defensible at annual, pre-purchase, and pre-buy inspections.
The Cessna name is among the most recognized in aviation — founded in Wichita, Kansas in 1927 and part of Textron since 1992, today a cornerstone of Textron Aviation. Cessna's Citation line, launched with the Model 500 in the early 1970s, grew into the best-selling business-jet family in the world, spanning today from the light M2 to the super-midsize Longitude.
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