King Air NLG Door Hinge Kit

Avoid unnecessary and costly repairs by installing AeroTough® GF polymer bushings. This preventative maintenance solution will ensure that you will never have the complications with seized bushings that traditional metal bushings can exhibit.

Lifetime lubricated AeroTough® bushings prevent problems:

  • Eliminate anxiety about damages to the supporting structure
  • Never worry about lubricating tough-to-access place
  • Zero risk of corrosion between sleeve and bushing
  • Be proactive: The cost to repair greatly exceeds the price of prevention.


    An essential part of your landing gear maintenance checklist is the need for periodic lubrication of hard-to-get-at door hinge bushings. Achieving proper lubrication is challenging because access is difficult. If these bushings are not lubricated regularly, corrosion will result. This can cause the bushing and sleeve to fuse together over time, resulting in problems with the door rigging and the operation of the aircraft. This could lead to an inoperable gear door or the cracking of the gear door - a safety issue for sure and at best, an expensive repair. Our kit is insurance against the possibility of future problems.
      The solution to this problem is AeroTough® GF polymer bushings. These non-metallic bushings can be easily installed and will provide smooth grease-free operation. AeroTough® bushings will never require lubrication. The polymer material is designed to incorporate its own lubrication. If someone doesn’t know our bushings have been fitted and decides to squirt some lubrication into the hinges, it’s no problem. Our bushings are quite happy to run in oil or grease – it’s just not necessary!

      The Marsh Brothers Aviation kit includes not only the AeroTough® GF bushings, but also includes all new hardware to re-install your landing gear doors.

        Kit Drawing

        See drawing for contents included

        Approved Models

        OEM Door Hinge Bushing P/N

        Aircraft Model

        Marsh Brothers Replacement Bushing Kit Part Number



        Textron Aviation:

        65-90, 65-A90, C90, E90, H90, C90A, C90GT, F90, 200, 200C, 200CT, 200T, B200, B200C, B200CT, B200T, B200GT, B200CGT, 300, 300LW, B300, B300C


        Contact Marsh Brothers Today at 1-800-263-6242 or complete the form below