This is a replacement wiring harness for the SensorTap GM IAT/Baro Relocation Module (STRMB75CL). The harness includes connectors for the factory GM 4-wire MAF, the factory vehicle MAF harness, and the actual SensorTap module itself. This is an IAT ONLY breakout harness, and has a 2-wire Delphi 15449027 connector to connect to your IAT sensor. Compatible with GM LS9-style and LS1-style IAT sensors.