GM LS1 to LS3 MAP Sensor Adapter Harness

This adapter harness is used when upgrading from an early GM LS1 1 Bar MAP sensor to the late model LS3 2.5 Bar MAP sensor. This harness can also be used as an extension harness when changing the position of the sensor in the engine bay. Bosch LS3 map sensor is sold separately, part no. AF49-1559.