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4150 Carb Flange to LS3 Throttle Body Adapter - Drive By Wire 90mm 92mm 105mm

Wanting to run a drive by wire throttle body on your 4150 flanged intake manifold? Tired of stretching, adjusting, or breaking throttle cables? Look no further than the new Holley EFI Billet Aluminum Throttle Body Adapters. These two new adapters will easily adapt your 4150 flanged intake manifold to either the LS 90, 92, or 105mm Drive By Wire throttle body, including the factory LS3 and LS7, Nick Williams, etc. As long as it's a 4-bolt DBW it will fit!


  • CNC machined from Billet Aluminum for superior strength and great looks
  • Slotted bolt pattern allows you to clock the throttle body
  • O-Ring design provides for an air tight seal between the adapter and throttle body
  • Multiple NPT ports for various vacuum lines
  • Hardware included to simplify installation
  • 2x 1/8 NPT and 1x 3/8 NPT vacuum ports