Holley EFI LS main harnesses have a MAP sensor connecter designed for use with an LS1/2 style MAP sensor. This is an adapter harness that can be used to adapt any LS harness that uses the 3 pin Flat Gray connection for the LS1/2 MAP sensor, to an LS3 MAP. Also great for use with LS Hi-Ram intakes that require an LS3 MAP sensor.
Available in 6″ and 16″ Lengths
Use in place of Holley 558-416 for Terminator LSx systems