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Air and Fuel› Carburetors and Components

Holley

Terminator X Stealth EFI Kit 4150 Black

$2,249.95 $2,042.95 Save $207.00

SKU: H00E 550-1002

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Holley Terminator X Stealth 4150 EFI system replaces 4150 flange carburetors, supporting up to 650 HP naturally aspirated or 600 HP with forced induction. It features four 100LB/HR fuel injectors and offers fuel map self-learning and ignition timing control for improved performance and drivability. Designed for a stealthy installation, all wiring exits below the rear fuel injector cover. The system also includes transmission kick down provisions for various GM and Ford transmissions, and a high-resolution touchscreen for easy setup without a laptop.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHolley
Part NumberH00E 550-1002
Weight15.85 lb

Videos

Ditch the Carb and Go EFI with Holley Terminator X Stealth 4500 and 4150

Ditch the Carb and Go EFI with Holley Terminator X Stealth 4500 and 4150
Holley EFI Sniper Stealth 4150

Holley EFI Sniper Stealth 4150
Why you Dont want Terminator EFI

Why you Dont want Terminator EFI
Holley EFI Stealth - Disguised as a Carb!

Holley EFI Stealth - Disguised as a Carb!
Holley Terminator Stealth EFI Installed - 1968 Chevelle SS

Holley Terminator Stealth EFI Installed - 1968 Chevelle SS
Holley EFI Terminator X Stealth 4150 Unboxing!

Holley EFI Terminator X Stealth 4150 Unboxing!
Terminator X Full Install and Overview

Terminator X Full Install and Overview
Terminator X Stealth 4150 Throttle Body EFI system

Terminator X Stealth 4150 Throttle Body EFI system
Terminator X EFI for Ford Part 1: Sensors And Relay Wiring

Terminator X EFI for Ford Part 1: Sensors And Relay Wiring
Don't Buy A Holley Terminator X Before Watching This Video

Don't Buy A Holley Terminator X Before Watching This Video

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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