$269 Off

Holley 550-1081 Terminator Stealth 2X4 4500 Kit, Black

$269 Off

#4255501081

Holley 550-1081 Terminator Stealth 2X4 4500 Kit, Black

Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds
Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
2.125" Throttle Plates, Flow 1440 CFM each for large cubic inch engines

Finish:

Black

$3,949.95

Factory Shipped

$4,218.95

Save $269.00

Quantity

Need Help? Call to Order

Add to a list

Select a vehicle to verify Fitment

Select Vehicle

Product Summary

Universal Fit, Throttle Body Injection Style

Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds
Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
2.125" Throttle Plates, Flow 1440 CFM each for large cubic inch engines
Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options
External fuel pressure regulator required, such as 12-848

See more details

Key Specs

Injection Style	Throttle Body
Injector Size	100 lb/hr @ 58.5 PSI
Max Horsepower Rating	1500
ECM Included	Yes
Throttle Body Style	Throttle Body Injection (TBI)

See more specs

Need To Know

Need help?

855.313.9176

View the Help Center

Quick and Easy Returns

Return Policy

Holley 550-1081 Details

Holley Terminator X Stealth 2X4 4500 Kit

Terminator X Stealth 4500 2x4 - 8 Injector - 800-1500 HP - Black

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!

Features:

Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds
Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
2.125" Throttle Plates, Flow 1440 CFM each for large cubic inch engines
Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options
External fuel pressure regulator required, such as 12-848
Throttle Linkage not included
Each throttle body contains 4x 100lb/hr fuel injectors
Universal engine harness allows you to easily install the Terminator X 2x4 4500 system on a wide variety of engine combinations
Timing Control support integrated within the ECU using supporting components (distributor, ignition box, or crank trigger)
High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
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!
Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!
The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation
Plug and play with Holley EFI Accessories, such as the 12.3" and 6.86" Pro Dash; CAN EGT; and Digital Analog style EFI gauges

Guides & Documents

Choosing an Electronic Fuel Injection Retrofit for Your Street Rod or Muscle Car

Fuel Injection Systems Installation Instructions (4255501081)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Holley 550-1081 Specifications

KEY SPECS
MFG. Part #	550-1081
Brand	Holley
Injection Style	Throttle Body
Injector Size	100 lb/hr @ 58.5 PSI
Max Horsepower Rating	1500
ECM Included	Yes
Throttle Body Style	Throttle Body Injection (TBI)

GENERAL
Carburetor Flange Type	4-Barrel Square Bore
CFM	2880 CFM
User Tunable	Yes
Self Tuning	Yes
Injectors Included	Yes
Intake Manifold Included	No
Metering Style	Speed density
EGR	No
Throttle Body Included	Yes
Throttle Body Material	Cast Aluminum
Throttle Body Finish	Powder Coated
Throttle Body Flange Type	4-Barrel Square Bore
Venturi Quantity	8
Fuel Pump Included	No
Fuel Rails Included	No
Calibration Module Included	Yes
Wiring Harness Included	Yes
Fuel Pressure Regulator Included	No
Distributor Included	No
MAP Sensor Included	Yes
IAC Motor Included	Yes
IAT Sensor Included	Yes
TPS Sensor Included	Yes
Emission Code	3
Use with Power Adder	Yes
Throttle Body Barrels	4-Barrel
Bore Size	2.125"
GTIN Code	090127130247
Sold in Quantity	Kit

Ratings & Reviews

Be the first to write a review.

Questions & Answers

Be the first to ask a question.