ADAPTER HARNESS - EARLY GM IAC TO LATE GM DCOE Some further porting in likely

Some further porting in likely to be required

Please note this manifold does not fit the 16v engine

Kit includes steel -6 JIC fuel rails and a cross linkage kit

The Jenvey Chevrolet LS3 ITB downdraft throttle body kit is designed specifically for motorsport applications offering exceptional performance lightness reliability and looks

Ideal for NA and Turbo applications

ADAPTER HARNESS - EARLY GM IAC TO LATE GM DCOE Some further porting in likelyDetails The IAC (Idle Air Control) valve uses a small electric motor to vary engine idle rpm to exactly where you set it at in your ECU parameters. Part Number 308023: Wiring Pigtail allows use of Early GM TPI Style IAC in vehicle that has a wiring harness for Late GM IAC style connectors