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Holley EFI 534-309 Terminator X Stealth 4150 EFI Throttle Body Air Valve - Gold

Manufacturer

Picture for manufacturer Holley EFI

Part Number

534-309
5 reviews
Sale Price

$1,171.95

3 left at this price

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Holley EFI 534-309 Terminator X Stealth 4150 Air Valve is a high-flow EFI throttle body engineered for multi-port fuel injection (MPFI) intake manifold applications. Finished in a classic gold anodized coating, it delivers the traditional look of a 4150 carburetor while providing modern electronic fuel injection performance with a rated airflow capacity of 950 CFM.

Unlike full throttle body EFI kits, this Stealth-style air valve does not include fuel injectors — it is specifically designed to serve as the airflow control component on MPFI intake manifolds where injectors are already integrated into the manifold or fuel rail system. This makes it an ideal replacement or upgrade component for existing Terminator X Stealth EFI builds.

Key Features:

  • 950 CFM airflow capacity for high-performance applications
  • 4150 flange mounting pattern for broad manifold compatibility
  • Gold anodized finish — classic look available in three finishes: Shiny, Black, and Gold
  • Includes GM TPS Sensor (Throttle Position Sensor) for accurate throttle feedback
  • Compatible with GM Throttle Position Sensor and GM Idle Air Control (IAC) motor
  • Designed for use on MPFI intake manifolds — injectors not included
  • Cast aluminum throttle body construction

This part is intended for use on uncontrolled, non-emissions controlled vehicles. Verify kickdown provisions prior to installation.

Products specifications

Adjustable

Yes

Brand

Holley EFI

Category

Air and Fuel Delivery

CFM

950

Color

Gold

Emission Code

3

Finish

Gold

Flange Size

4150

Flange Style

Squarebore

Fuel Injectors Included

No

Fuel System Type

EFI

Grade Type

Performance

Idle Air Control Motor Included

No

Max Horsepower Rating

650 Naturally Aspirated

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

Classic Gold

Throttle Body Material

Cast aluminum

Throttle Body Spacer Included

No

Throttle Bore

1.75 in.

Throttle Position Sensor Included

Yes

Warning

California Proposition 65

Fantastic service, and website was very user friendly with insuring correct fitment.

Product was excellent

VERY EASY NICE STAFF

It was great

great!

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