Overview Reviews Product Description Holley EFI LS main harnesses have a MAP sensor connecter designed for use with a LS1/2 style MAP sensor. The 558??416 is an Adapter harness that allows for Holley LS2 Harness PN 558??103 to be used on LS3 engines, which has a different MAP sensor. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Holley LS 1/2 TO LS3 MAP ADAPTER Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments
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