This is a new MAF adapter harness to allow you to use an LS2 or ’99-06 Truck style 5 pin Mass Airflow Sensor (MAF) with your LS1 harness (that has separate IAT and MAF connectors).  Typically, this would be used with ’98-02 F-Body (Camaro and Firebird).  You can use the built-in IAT in the new MAF or continue to use your original IAT.  If you have any questions, feel free to ask.
These ship free anywhere in the US! p/n WLS046
