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Holley EFI 112-577 Universal 4BBL Billet 1000 CFM EFI Throttle Body 4150 Flange

(2015-2020 Ford F150)

Manufacturer

Picture for manufacturer Holley EFI

Part Number

112-577
8 reviews
Sale Price

$1,049.95

2 left at this price

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Usually delivered within 2 days

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Product Details

The Holley EFI 112-577 is a universal 4-barrel billet throttle body engineered for high-performance and race-grade multi-point fuel injection systems. Flowing 1,000 CFM through four 44.45mm bores, this throttle body is designed to feed even the most demanding naturally aspirated and forced-induction engines without becoming a restriction.

Machined from CNC billet aluminum, the 112-577 mounts to any 4150 square bore flange intake manifold, making it a direct-fit solution for a wide range of EFI builds. The throttle shafts are offset relative to the throttle plates so that engine vacuum actively assists plate closure, improving throttle response and safety at idle and low speeds. The progressive linkage system delivers smooth, precise throttle control across the full range of pedal travel.

Key Features:

  • 1,000 CFM maximum airflow rating — 4 venturis at 44.45mm bore each
  • CNC billet aluminum construction for strength, durability, and a premium appearance
  • 4150 square bore flange for broad intake manifold compatibility
  • Cable-actuated operation with progressive linkage system for precise throttle control
  • Offset throttle shafts assist plate closure using engine vacuum
  • Compatible with Holley Throttle Position Sensor (TPS) and Holley Idle Air Control (IAC) motor
  • Includes all vacuum ports and linkage hardware required for installation
  • Minimizes air turbulence for improved airflow efficiency and drivability

Note: This part is intended for racing use on uncontrolled, non-emissions-controlled vehicles only. Verify compliance with local regulations before installation.

Products specifications

Fits

2015-2020 Ford F150

Adjustable

Yes

Barrels

4

Billet Color

Clear

Bore Diameter

4x1.75 IN

Brand

Holley EFI

Category

Air and Fuel Delivery

CFM

1000

Emission Code

4

Flange Style

4150/4160 Square Bore

Fuel Injectors Included

No

Fuel System Type

EFI

Gasket Or Seal Included

No

Grade Type

Performance

Height

2"

Idle Air Control Motor Included

Yes

Material

Billet

Mounting Hardware Included

No

Part Type

Fuel Injection Throttle Body

Product Type

Throttle Body

Sub Category

Fuel Injection System and Related Components

Throttle Body Finish

Polished

Throttle Body Material

Billet aluminum

Throttle Body Spacer Included

No

Throttle Bore

1.750 inch

Throttle Position Sensor Included

Yes

Warning

California Proposition 65

Third time I have ordered from you guys, always a pleasant experience!

Fast delivery and great product

Excellent transaction

The only thing that didn't go very well was the time it took to receive the 2nd part of my order. I paid extra for 2 day shipping. It took closer to 6 days to receive my CDI switch box.

All good here!

I've only had the tires for a week but so far so good real like them great price

Fire

Good deal thanks

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