This part is a good, used C4 Engine Control Module (ECM) Mounting Bracket which can be installed on any of the following Corvette models:
Body & Trim
Base, Collector’s Edition, Grand Sport
Base, Indianapolis 500 Pace Car, ZR-1
40th Anniversary Edition, Base, ZR-1
NOTE: This is the bracket that sits between the brake booster and the firewall.
GM Part Numbers: 10143544, 10086314, 10086260