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Holley EFI Dominator Flange Throttle Body

2550CFM Dominator Flange "Big Dual" Throttle Body Air Valve

PART# 112-593

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Holley's NEW EFI Throttle Bodies are unquestionably the BIGGEST BORE - MOST FEATURE LOADED units available on the market today. Holley went back to the drawing board and built the ultimate air valves for your hotrods power plant. The 2550 CFM Dominator Flange Throttle body will be at home on even the largest cubic inch engines. These throttle bodies are feature packed, showcasing roller bearing throttle shafts, non-contact magnetic TPS sensors, and index-able throttle leavers. Making these the ultimate throttle bodies for ease of installation and tuning. Regardless of whether you have a turbo, supercharger, or a big cam engine pumping massive gulps of air, Holley's throttle bodies are maximized for your application.


  • Lightweight billet design (4500 bolt pattern)
  • Dual throttle blades for maximum airflow
  • Shafts ride on roller bearings for ultra-smooth throttle actuation
  • Flows 2550 CFM
  • Versions with and without supplemental injector provisions (4 injectors per TB and rails)
  • Non-contact magnetic TPS sensor – Bringing Pro Stock and ARCA Technology to your ride!


Billet ColorClear
Bolt PatternDominator Flange
BrandHolley EFI
Emission Code4
Height3 Inches
MaterialBillet Aluminum
Product TypeThrottle Body
Throttle Bore25.8 Sq Inches
Part Number112-593



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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