GASKET

The 4190 is a genuine Textron Aviation gasket that seals a joint or opening against air, fluid, or contamination. It carries an export classification of ECCN 9A991. Material and dimensions make a seal work; the correct factory part is what keeps the joint from leaking in service. Confirm this part's applicability to your specific aircraft, serial number, and modification status against the approved parts data before you install it. Because substitutions on type-certificated aircraft require approved data, the genuine part is the straightforward, compliant choice for this application. Verify the part number and any supersessions against the manufacturer's parts catalog for your model and serial before ordering. Genuine factory parts carry the documentation and traceability that maintenance and airworthiness records depend on — assurance a look-alike substitute cannot provide. Because aircraft parts are governed by strict airworthiness and traceability rules, fitting the OEM part rather than an unapproved equivalent keeps the installation eligible and the aircraft's records clean. An unapproved or surplus substitute can introduce fit, material, or paperwork problems that surface at the next inspection; the genuine part avoids that risk. This part is cataloged by Textron Aviation, the Wichita, Kansas manufacturer that unites the Cessna, Beechcraft, and Hawker brands. To source 4190, request a quote on Flying411 — we'll confirm availability, condition, and lead time.