SKU: 52654770682

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

Sale price$1777.47 Regular price$1974.97
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Holley EFI Terminator X Stealth 2x4 4500 Kit - Black 550-10818 Injectors 800 1500 HP Features: Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds1 Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb Hr Injectors2 2. 125? Throttle Plates, Flow 1440 CFM each for large cubic inch engines3 Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options4 External fuel pressure regulator required, such as 12 8485 Throttle Linkage

8 Injectors - 800-1500 HP


Features:

  • Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds1
  • Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors2
  • 2.125? Throttle Plates, Flow 1440 CFM each for large cubic inch engines3
  • Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options4
  • External fuel pressure regulator required, such as 12-8485
  • Throttle Linkage not included6
  • Each throttle body contains 4x 100lb/hr fuel injectors7
  • Universal engine harness allows you to easily install the Terminator X 2x4 4500 system on a wide variety of engine combinations8
  • Timing Control support integrated within the ECU using supporting components (distributor, ignition box, or crank trigger)9
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays10
  • 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!11
  • Self-tuning ECU means you don?t have to be a computer/tuning wiz to have EFI!12
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!13
  • Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation14
  • Plug and play with Holley EFI Accessories, such as the 12.3? and 6.86? Pro Dash; CAN EGT; and Digital Analog style EFI gauges15
  • Available in 2 finishes, Shiny and Black16

Specs:

Accelerometer Support Yes
Boost Control Yes
Brand Holley EFI
CAN-BUS Support Yes
CFM 2880
Coil Per Cylinder Ignition Support Yes
Color Black
Datalogging Support Yes
Distributor Included No
Dry Nitrous Control Yes
e85 Support No
EGT Support Yes
Emission Code 3
Finish Black
Flange Size 4500
Flange Style Dominator
Forced Induction Support Yes
Fuel Filter Included No
Fuel Hose Included No
Fuel Injectors Included Yes
Fuel Pressure 58.5 PSI
Fuel Pressure Regulator Included No
Grade Type Performance
Handheld Included Yes
Ignition Timing Control Yes
Ignition Type Universal
Individual Cylinder Fuel Corrections No
Injector Size 100 lb/hr @ 58.5 PSI
Inlet / Outlet Size 8AN
Intake Manifold Included No
Knock Retard Support Yes
MAP Sensor 1bar
Max Horsepower Rating 1500+
Multi-Stage Nitrous Control Yes
Product Type EFI System
Progressive Nitrous Control Yes
Self-Tuning Yes
Terminator LS Options Fuel, Spark
Throttle Bore 2.125 in.
Throttle Position Sensor Included Yes
Transmission N/A
User-Tuneable Yes
Warning California Proposition 65

Application:

Year Make Model Submodel
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 52654770682

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Kathleen D.
West Palm Beach, US
★★★★★ 5
Best cork remover!
Color: 7-in-1 Silver, Size: Rechargeable
I love this wine bottle opener. With just a zip, the cork is out! No struggling, no breaking of the cork. Perfect. I’ve bought several for gifts.
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Reviewed in the United States on April 28, 2026
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Gordon Butler
Omaha, US
★★★★★ 5
Wine Made Easy
Color: 7-in-1 Silver, Size: Rechargeable
Excellent product and welcome addition to my kitchen. Wine opening made super easy and looks fantastic !
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Reviewed in the United States on April 26, 2026
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vanessa
Bozeman, US
★★★★★ 5
Great gift
Color: 7-in-1 Silver, Size: Rechargeable
It’s really easy to use, works amazing, nice speed. It looks awesome on my counter top. Great idea for a gift!!!
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Reviewed in the United States on April 12, 2026
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Jeremiah Priddy
Los Angeles, US
★★★★★ 4
Great value
Color: 6-in-1 Silver, Size: Rechargeable
Great value for the price. Opener works great and holds a charge well.
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Reviewed in the United States on March 30, 2026
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Mike
Chelsea, US
★★★★★ 5
Don't pass this one by
Color: Gunmetal Grey, Size: Rechargeable
This is the best wine opener we ever had...push button once...it goes in, pulls cork out, then reverses and drops cork in your hand...all with one push of the button. Long battery life between charges.
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Reviewed in the United States on May 6, 2026

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