The C-side assembly includes the upper aluminum case with palmrest, keyboard, trackpad, side speakers, and Thunderbolt 3 ports—it commonly suffers from physical damage due to impact or battery swelling.
MacBook Pro 15" 2018 (A1990) features a butterfly keyboard integrated into the C-side, making it necessary to replace the entire assembly when damaged.
Replacement involves complete disassembly—removing the logic board, battery, cooling system, speakers, and Touch Bar cables—before transferring components into the new housing.
Replacement options include original pulled parts (retaining factory keyboard and trackpad) or OEM Grade A units with new keyboard and case.
The service includes a 3–6 month technical warranty with post-service support for keyboard response issues, trackpad malfunctions, port misalignment, or chassis fitting.