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Holley Terminator X Stealth 4500 EFI Fuel Injection Systems 550-1071 Systems, X, EFI, Eight Injector, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit

SKU: HLY550-1071

Fuel Injection Systems

Holley Terminator X Stealth 4500 EFI Fuel Injection Systems 550-1071 Systems, X, EFI, Eight Injector, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit

SKU: HLY550-1071

Fuel Injection Systems
A$5,906.93
LOW STOCK! Est Ship 4-7 days. In stock at 2 locations (more than 10 available)

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Description

Fuel Injection Kit - Terminator X Stealth - Throttle Body - Power Module / Programmer / 02 Sensor - Stainless - Black Anodized - Kit


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:15:13

Data: v4.2 - Upd: 2026-11-08 06:34:46

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.

(keyword: efi)

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 hly550-1071
SFX Item ID 4782450
Accounting SKU hly-550-1071
Manufacturer SKU 550-1071
Manufacturer UPC 090127105252
Alternative References 550-1071, HLY-550-1071, HOL550-1071

Fuel Injection Systems, Terminator X, Stealth 4500 EFI, Eight Injector, Throttle Body, Speed Density, Aluminum, Black, Tunable, Kit

Holley Terminator X Stealth 4500 EFI systems feature eight 100 lb. fuel injectors capable of supporting up to 1,500 hp naturally aspirated or 1,250 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! They are designed to fit with Gen 3 Ultra Dominator air cleaners and fuel crossovers, enabling you to easily convert your 4500 equipped 800+ horsepower dragster or door car. Choose from a black or polished aluminum body.

Product Attributes
BrandHolley
Manufacturer's Part Number550-1071
Part TypeFuel Injection Systems
Product LineHolley Terminator X Stealth 4500 EFI Fuel Injection Systems
UPC090127105252
Fuel Injection StyleThrottle body
Fuel Injection System TypeSingle 4-Barrel Throttle Body (4500 Flange)
Maximum Horsepower with Gas1,500
Timing Control CompatibleYes
ECM IncludedYes
Self TuningYes
User TunableYes
Fuel System IncludedNone
Ignition System IncludedNone
Power Distribution IncludedNone
User Interface Included3.5 in. display
EGRNo
Transmission Controller IncludedNo
Metering StyleSpeed density
Multi-Port Fuel Rails IncludedNo
Throttle Body IncludedYes
Throttle Body Mounting Flange4500 Dominator
Venturi Quantity4
Venturi Diameter (mm)53.98mm
Airflow Rate (cfm)1,440 cfm
Throttle Body MaterialCast aluminum
Throttle Body ColorBlack
Injectors IncludedYes
Injector Size (lbs/hr)100 lbs./hr.
Calibration Module IncludedYes
Wiring Harness IncludedYes
Oxygen Sensor IncludedNo
Fuel Pressure Regulator IncludedNo
MAP Sensor IncludedYes
IAT Sensor IncludedYes
TPS Sensor IncludedYes
IAC Motor IncludedYes
QuantitySold as a kit.
NotesExternal fuel pressure regulator required, set to a base pressure of 58.5 psi.

Compatibility

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