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Holley EFI LS main harnesses have a MAP sensor connecter designed for use with an LS1/2 style MAP sensor. The 558-416 is an adapter harness that can be used to adapt any LS harness that uses an LS1/2 MAP sensor connection to an LS3 MAP. Also great for use with LS Hi-Ram intakes that require an LS3 MAP sensor.
When your order has shipped, you will receive an email notification from ShipStation and Our Website which will include a tracking number you can use to check its status. Please allow 48 hours for the tracking information to become available as some methods of shipment differ from one to another.
If you haven’t received your order within 5 days of receiving your shipping confirmation email, please contact us at marianne@fullthrottlespeed.com with your name and order number, and we will look into it for you!