iMac 21.5″ A1418 – Wireless Antenna $15.00 A1418 – Late 2015 Airport & Bluetooth Select One Choose an optionABCClear iMac 21.5" A1418 - Wireless Antenna quantity Add to cart Add to Quote Continue Shopping Category: A1418 (21.5" iMac) Late 2012-Mid 2017 Description Wireless Antennas for all Late 2015 iMac 21.5″ A1418. Bluetooth and Airport A) Upper Antenna – 923-00567 B) Mid Antenna – 923-00569 C) Lower Antenna – 923-00570