BEARING

The MS21155S16 is a genuine Textron Aviation bearing — a low-friction pivot or rotational support in an assembly. It fits the Citation CJ4, CJ4 Gen 2, CJ4 Gen 3 and Citation Mustang. It carries an export classification of ECCN 9A991, weighs 0.38 lbs, and measures 1.7 (L) x 1.7 (W) x 1 (H) in. Supplied directly by Textron Aviation as an original-equipment (OEM) part, the MS21155S16 meets the manufacturer's specification and keeps the aircraft configuration-correct, with clean traceability in the maintenance records. Across the Cessna Citation fleet, correctly identified factory parts like this keep every airframe consistent and configuration-correct. A bearing or bushing sets how a shaft or pivot moves and wears; the right part keeps that motion as designed. The value of an OEM part is as much in its paperwork and pedigree as its metal — both of which an aircraft's records require. Choosing the genuine article over an unapproved part keeps mechanics' sign-offs clean and the aircraft's configuration exactly as certificated. Sourcing the OEM part protects the airframe's configuration and keeps its service history consistent, which matters for both airworthiness and resale value. Cessna traces to the company Clyde Cessna founded in Wichita, Kansas in 1927; Textron Inc. acquired it in 1992, and since 2014 it has anchored Textron Aviation alongside Beechcraft and Hawker. 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. Request a quote for MS21155S16, or browse more Cessna Citation parts on Flying411.