Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1005 Systems, X, EFI, Eight Injectors, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit
Holley Terminator X Stealth 4150 EFI Fuel Injection Systems 550-1005 Systems, X, EFI, Eight Injectors, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit
Description
Fuel Injection - EFI Terminator X Stealth - Throttle Body - Square Bore - Aluminum - Gray - Kit
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:17:10
Features
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly550-1005 |
| SFX Item ID | 4784206 |
| Accounting SKU | hly-550-1005 |
| Manufacturer SKU | 550-1005 |
| Manufacturer UPC | 090127093016 |
| Alternative References | 550-1005, HLY-550-1005, HOL550-1005 |
Fuel Injection Systems, Terminator X, Stealth 4150 EFI, Eight Injectors, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit
Holley Terminator X Stealth 4150 EFI systems feature 4 or 8, 100 lb. fuel injectors capable of supporting up to 650 hp naturally aspirated, and 600 or 1250 hp on forced induction applications. The Terminator X ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! The throttle body has the standard 4150 carburetor flange so it will bolt down where your square bore carburetor was. Holley Terminator X Stealth 4150 systems also include transmission kick-down provisions for GM TH350, TH400, 200R4, 700R4, and Ford's C4 and C6 applications!
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 550-1005 |
| Part Type | Fuel Injection Systems |
| Product Line | Holley Terminator X Stealth 4150 EFI Fuel Injection Systems |
| UPC | 090127093016 |
| Fuel Injection Style | Throttle body |
| Fuel Injection System Type | Single 4-Barrel Throttle Body (4150 Flange) |
| Maximum Horsepower with Gas | 1,250 |
| Timing Control Compatible | Yes |
| ECM Included | Yes |
| Self Tuning | Yes |
| User Tunable | Yes |
| Fuel System Included | None |
| Ignition System Included | None |
| Power Distribution Included | None |
| User Interface Included | 3.5 in. display |
| EGR | No |
| Transmission Controller Included | No |
| Metering Style | Speed density |
| Multi-Port Fuel Rails Included | No |
| Throttle Body Included | Yes |
| Throttle Body Mounting Flange | 4-barrel square bore |
| Venturi Quantity | 8 |
| Venturi Diameter (mm) | 44.45mm |
| Airflow Rate (cfm) | 950 cfm |
| Throttle Body Material | Cast aluminum |
| Throttle Body Color | Black |
| Injectors Included | Yes |
| Injector Size (lbs/hr) | 100 lbs./hr. |
| Calibration Module Included | Yes |
| Wiring Harness Included | Yes |
| Oxygen Sensor Included | Yes |
| Fuel Pressure Regulator Included | No |
| MAP Sensor Included | Yes |
| IAT Sensor Included | Yes |
| TPS Sensor Included | Yes |
| IAC Motor Included | Yes |
| Quantity | Sold as a kit. |
| Notes | External fuel pressure regulator required, set to a base pressure of 58.5 psi. |
Compatibility
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