GROMMET

The MS21266-6N is a genuine Textron Aviation grommet that seals a joint or opening against air, fluid, or contamination. It is fitted to the Citation CJ3, CJ3+, CJ3+ Gen 2, CJ3 Gen 3, Citation Excel, XLS, XLS+, XLS Gen 2, Citation Latitude, Citation Longitude, Citation M2, M2 Gen 2, M2 Gen 3, Citation Sovereign or Sovereign+, Citation X+, and Premier Model 390. It carries an export classification of ECCN EAR99. As an original-equipment (OEM) part supplied directly by Textron Aviation, the MS21266-6N is built to the aircraft maker's specification and cross-references the type design as documented in the maintenance data. Choosing the genuine part over an unapproved substitute preserves configuration control and simplifies inspection sign-offs. Because the Cessna Citation and Beechcraft Premier aircraft share extensive structure and hardware, a single part like this is often common across several variants. A seal or gasket keeps a joint tight against its service conditions; only the specified part reliably maintains that integrity. For a regulated aircraft component, correct identification by factory part number is what guarantees the exact form, fit, and function the design calls for. These aircraft are built by Textron Aviation, which unites Cessna (founded 1927) and Beechcraft (founded 1932) under one Wichita, Kansas company since 2014. The Citation family is the best-selling line of business jets ever built, and more than 7,500 have been delivered worldwide. To check availability, request a quote for MS21266-6N or browse more Cessna Citation and Beechcraft Premier parts on Flying411.