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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:
- 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]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Love it
Color: Pawty
This was perfect for my boys 5th birthday. It’s cute and he loves it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 16, 2025
★★★★★ 5
Great Launcher.
Style: 1.7" Ball
It launches balls impressively far, which keeps my pup happily running and burning off energy. No longer having to bend down to pick up slobbery tennis balls! is a huge win! It’s lightweight, easy to use, and surprisingly durable.
Highly recommend for anyone with an energetic pup and a desire to keep fetch going without the strain! Just note that it is for smaller sized tennis balls.
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Reviewed in the United States on August 12, 2025
★★★★★ 5
Excellent product, but keep it away from chewers.
Style: 2.5" Ball
This is a very strong and effective launcher and could have lasted a very long time had my 9 month old not chewed the ball claw end off. I will buy again.
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Reviewed in the United States on February 10, 2026
★★★★★ 5
Our Dog Loves This Ball Thrower So Much
Style: 2.5" Ball
Works excellent for dogs that like to fetch! Our family dog loves this toy. He will bark and jump as soon as he sees us pick it up. The dog next door to us gets excited when he sees us play with our dog with this dog ball thrower. Its that good for dogs who love to fetch and run. Perfect for the young and elderly to play fetch with a pet dog. If you have back or shoulder problems works very well. You don't have to bend down and pick up a slobbery ball. Nope you use this to pick up, grip up and grab the ball. Wish every dog could have this ball thrower in their lives. It has changed the way we play fetch with our dog.
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Reviewed in the United States on August 5, 2025
★★★★★ 4
Good Pet Ball Launcher
Style: 2.5" Ball
I bought to throw balls for my Aussie. He does not like to tennis ball that came with it and chewed it up in less than one play time. The launcher seems to be of good quality and works well. We bought different balls made for launchers that work well.
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Reviewed in the United States on October 24, 2025