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I have ordered and received the keyboard Ifixit 15117312 which looks right. Based on online video, it appears that I may need an insulator to complete the repair. Where can I get one? Also, do I need screws to replace rivets? And I have received a battery, A1375 to replace my A1406, is this a good replacement?

Hi you need this keyboard MacBook Air 11" (Mid 2011-Early 2015) Keyboard as long ask you got this keyboard you will be fine what insulator are you talking about? the keyboard will sit under the backlight, and hence you dont need an insulator. with the rivits if you take them out correctly, you can add screws that will add a more “original” finish to it lastly, battery is ok, but the a1406 is a more powerful battery. if you get it exchanged that would be better imo hope this helps