Holley EFI LS Main Harness to LS3-style MAP Sensor Adapter 1999 Pontiac Firebird If you prefer a full

If you prefer a full stainless steel exhaust system with a Lifetime Limited Warranty

ACEA Service Class A3

and pairs well with our Classic and Legend suits

B015X is an ACT Xtreme pressure plate that uses exclusive diaphragm design to increase clamp load

Holley EFI LS Main Harness to LS3-style MAP Sensor Adapter 1999 Pontiac Firebird If you prefer a fullHolley 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.