The Holley EFI die cast aluminium four barrel throttlebody is designed to fit on anysquare bore (4150 style) intake manifold. This new MPFIRace Throttle Body shares the same air entry area design that powers every NASCAR Sprint Cup Series car! The unit includes the Throttle Position Sensor (TPS), Intake Air Temperature Sensor (IAT), and Idle Air Control (IAC) motor. It has four 1-3/4" throttle plates. It features non progressive throttle linkage, for quickest throttleresponse, but can be convertedto progressive operation by removing and adjusting the installed linkage. It also features one 3/8" and one 3/16" full manifold vacuum ports!

Features:

• 1-3/4" throttle bore
• Standardsquare bore mounting pattern for installation on many intake manifolds
• Integrated TPS, IAC and Air Sensor
• Hi Flow IAC passages for large cubic inch engines for idle stability
• Uses a non-contact magnetic hall effect TPS sensor
• Includes (1) 3/8" and (1) 3/16" full manifold vacuum ports
• PTFE coated throttle shaft rides in oil impregnated bronze bushing forsmooth actuation
• Dedicated race only throttle lever
• Stainless Steel adjustable secondary link; factory set to 1:1 actuation
• Knurled primary curb idle adjustment screw
• High quality diecast aluminuim for strength and weight reduction
• Hard Core Gray finish