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    Holley EFI Holley EFI Terminator X Stealth 2x4 4500 Kit - Black 550-1081

    Vendor: Holley EFI
    Part Number: 550-1081
    Save $494
    Sale Price $3,949.95 Regular Price $4,443.95

    Currently out of stock.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    The Terminator X Stealth 4500 2x4 EFI systems from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 1500 HP naturally aspirated 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! Designed to fit with Gen 3 Ultra Dominator air cleaners and fuel crossovers, allowing you to easily convert your 4500 equipped 800+ horsepower dragster or door car!


    Holley EFI Holley EFI Terminator X Stealth 2x4 4500 Kit - Black 550-1081


    Specifications:

    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Air and Fuel Delivery
    CFM 2880
    10438 Yes
    Color Black
    10430 Yes
    10437 No
    10442 Yes
    10418 No
    10428 Yes
    Emission Code 3
    Finish Black
    Flange Size 4500
    Flange Style Dominator
    Forced Induction HP@60PSI 1250
    10433 Yes
    7246 No
    10417 No
    906 Yes
    Fuel Pressure 58.5 PSI
    10425 No
    8922 No
    3390 Performance
    Handheld Included Yes
    Height 3.85"
    Horsepower Rating (HP) 1500
    909 No
    10422 Yes
    Ignition Type Universal
    10432 No
    Injector Size 100 lb/hr @ 58.5 PSI
    Inlet / Outlet Size 8AN
    9780 No
    10427 Yes
    MAP Sensor 1bar
    Max Horsepower Rating 1500+
    30 No
    10420 Yes
    Naturally Aspirated HP@60PSI 1500
    part type Fuel Injection System
    PDM No
    Power Distribution Module No
    Product Type EFI System
    10421 Yes
    10434 Yes
    Sub Category Fuel Injection System and Related Components
    Terminator LS Options Fuel, Spark
    Throttle Bore 2.125 in.
    918 Yes
    Traction Control Support Yes
    Transmission N/A
    10435 Yes
    Warning California Proposition 65
    10429 Yes
    10431 Yes
    Brand Holley EFI
    10423 Yes
    Category Air and Fuel Delivery
    CFM 2880
    10438 Yes
    Color Black
    10430 Yes
    10437 No
    10442 Yes
    10418 No
    10428 Yes
    Emission Code 3
    Finish Black
    Flange Size 4500
    Flange Style Dominator
    Forced Induction HP@60PSI 1250
    10433 Yes
    7246 No
    10417 No
    906 Yes
    Fuel Pressure 58.5 PSI
    10425 No
    8922 No
    3390 Performance
    Handheld Included Yes
    Height 3.85"
    Horsepower Rating (HP) 1500
    909 No
    10422 Yes
    Ignition Type Universal
    10432 No
    Injector Size 100 lb/hr @ 58.5 PSI
    Inlet / Outlet Size 8AN
    9780 No
    10427 Yes
    MAP Sensor 1bar
    Max Horsepower Rating 1500+
    30 No
    10420 Yes
    Naturally Aspirated HP@60PSI 1500
    part type Fuel Injection System
    PDM No
    Power Distribution Module No
    Product Type EFI System
    10421 Yes
    10434 Yes
    Sub Category Fuel Injection System and Related Components
    Terminator LS Options Fuel, Spark
    Throttle Bore 2.125 in.
    918 Yes
    Traction Control Support Yes
    Transmission N/A
    10435 Yes
    Warning California Proposition 65
    Description_INV TERMX STEALTH 4500, 2X4 , BLACK
    Description_ASC Not for use with engines producing less than 800 horsepowerGasoline OnlyUse of leaded race fuels may shorten the service life of the WBO2 sensor
    Description_DES Holley EFI Terminator X Stealth 2x4 4500 Kit - Black
    Description_EXT 8 Injectors - 800-1500 HP
    Description_MKT The Terminator X Stealth 4500 2x4 EFI systems from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 1500 HP naturally aspirated 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! Designed to fit with Gen 3 Ultra Dominator air cleaners and fuel crossovers, allowing you to easily convert your 4500 equipped 800+ horsepower dragster or door car!
    Description_FAB Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds
    Description_FAB Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
    Description_FAB 2.125” Throttle Plates, Flow 1440 CFM each for large cubic inch engines
    Description_FAB Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options
    Description_FAB External fuel pressure regulator required, such as 12-848
    Description_FAB Throttle Linkage not included
    Description_FAB Each throttle body contains 4x 100lb/hr fuel injectors
    Description_FAB Universal engine harness allows you to easily install the Terminator X 2x4 4500 system on a wide variety of engine combinations
    Description_FAB Timing Control support integrated within the ECU using supporting components (distributor, ignition box, or crank trigger)
    Description_FAB High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
    Description_FAB Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
    Description_FAB Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
    Description_FAB The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
    Description_FAB Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation
    Description_FAB Plug and play compatible with multiple Holley EFI accessories including our gauges, shift lights, various modules, and digital and pro dashes (Holley P/N's 553-106, 553-111, and 553-112)
    Description_INV TERMX STEALTH 4500, 2X4 , BLACK
    Description_ASC Not for use with engines producing less than 800 horsepowerGasoline OnlyUse of leaded race fuels may shorten the service life of the WBO2 sensor
    Description_DES Holley EFI Terminator X Stealth 2x4 4500 Kit - Black
    Description_EXT 8 Injectors - 800-1500 HP
    Description_MKT The Terminator X Stealth 4500 2x4 EFI systems from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 1500 HP naturally aspirated 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! Designed to fit with Gen 3 Ultra Dominator air cleaners and fuel crossovers, allowing you to easily convert your 4500 equipped 800+ horsepower dragster or door car!
    Description_FAB Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds
    Description_FAB Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
    Description_FAB 2.125” Throttle Plates, Flow 1440 CFM each for large cubic inch engines
    Description_FAB Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options
    Description_FAB External fuel pressure regulator required, such as 12-848
    Description_FAB Throttle Linkage not included
    Description_FAB Each throttle body contains 4x 100lb/hr fuel injectors
    Description_FAB Universal engine harness allows you to easily install the Terminator X 2x4 4500 system on a wide variety of engine combinations
    Description_FAB Timing Control support integrated within the ECU using supporting components (distributor, ignition box, or crank trigger)
    Description_FAB High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
    Description_FAB Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
    Description_FAB Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
    Description_FAB The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
    Description_FAB Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation
    Description_FAB Plug and play compatible with multiple Holley EFI accessories including our gauges, shift lights, various modules, and digital and pro dashes (Holley P/N's 553-106, 553-111, and 553-112)


    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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