3 to 5 wire (series II) - This is for the typical Series II to LQ4 MAF sensor conversion. Most common for Northstar throttle body conversions. This will retain your factory IAT sensor.
2004+ 5 to 5 wire (Series III) - This is for a 2004+ Grand Prix to a LQ4 MAF sensor conversion. This will use the LQ4 MAF sensors internal IAT sensor.
2004+ 5 to 3 wire (Series III) - This is for a 2004+ Grand Prix to a LT1 maf conversion. This will eliminate your IAT sensor, when doing this you will get a code. The LT1 MAF does not have an integrated IAT sensor like the factory 04+ GP MAF does. The MAF Adapter with IAT Plug is a better option, click here.

If you have a Series II car and want to eliminate your factory IAT sensor to use the internal one in a LQ4 MAF sensor, you will want this harness instead.

Email Tim@ZZPerformance.com for help with selecting the proper MAF adapter harness for your setup. Make sure to list year/model car and what MAF you want to end up using.

This item and all electrical items are non-returnable.