This Aeroflow Performance 5pin Mass Air Flow Sensor automotive plug are used with GM series LS engines when replacing or rewiring your MAFsensor. Each pigtail is a pre-terminated looms which allow easy installation on current wiring without the need to crimp. Perfect for those that are replacing worn damaged connectors or for those creating a new loom due to relocating coils. Note: Extra terminal pins and seals are supplied for custom looms or those wanting to crimp their own wires.