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- USA
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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Description
Holley EFI Terminator X Stealth 2x4 4500 Kit - Shiny 550-10808 Injectors 800 1500 HP Features: Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds 2. 125" Throttle Plates, Flow 1440 CFM each for large cubic inch engines Timing Control support integrated within the ECU using supporting components (distributor, ignition box, or crank trigger) Self tuning ECU means you dont have to be a computer tuning wiz to have EFI! Plug and play with Holley EFI Accessories, such as the 12. 3" and 6. 86" Pro
8 Injectors - 800-1500 HP
Features:
- Bolt on 4500 Flange Carburetor Replacement for 2x4 intake manifolds
- 2.125" Throttle Plates, Flow 1440 CFM each for large cubic inch engines
- Timing Control support integrated within the ECU using supporting components (distributor, ignition box, or crank trigger)
- Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
- 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
- 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!
- The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
- Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
- Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange offering a variety of air cleaner options
- 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
- High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
- Available in 2 finishes, Shiny and Black
- External fuel pressure regulator required, such as 12-848
- Included weld-in O2 sensor bung for the exhaust ensures a leak free oxygen sensor installation
- Throttle Linkage not included
Specs:
| Accelerometer Support | Yes |
|---|---|
| Boost Control | Yes |
| Brand | Holley EFI |
| CAN-BUS Support | Yes |
| CFM | 2880 |
| Coast Guard Approved | No |
| Coil Per Cylinder Ignition Support | Yes |
| Color | Shiny |
| Datalogging Support | Yes |
| Distributor Included | No |
| Dry Nitrous Control | Yes |
| e85 Support | No |
| EGT Support | Yes |
| Emission Code | 3 |
| Finish | Shiny |
| Flange Size | 4500 |
| Flange Style | Dominator |
| Forced Induction HP@60PSI | 1250 |
| 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 |
| Fuel Pump Included | No |
| Fuel System | Not Included |
| Fuel System Type | Not Included |
| Grade Type | Performance |
| Handheld Included | Yes |
| Height | 3.85" |
| Horsepower Rating (HP) | 1500 |
| 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 |
| Naturally Aspirated HP@60PSI | 1500 |
| PDM | No |
| Power Distribution Module | No |
| Product Type | EFI System |
| Progressive Nitrous Control | Yes |
| Sale Category | Air and Fuel Delivery |
| Self-Tuning | Yes |
| Terminator LS Options | Fuel, Spark |
| Throttle Bore | 2.125 in. |
| Throttle Position Sensor Included | Yes |
| Traction Control Support | Yes |
| Transmission | N/A |
| User-Tuneable | Yes |
| Warning | California Proposition 65 |
| Wet Nitrous Control | Yes |
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
4.6 ★★★★★
Based on 2192 reviews
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Product Reviews
★★★★★ 5
Sitting on a very comfortable leather chair
Color: Black, Color: Black
I have been using this chair for a few days. First of all, the installation is very simple and convenient. You can learn it just by looking at the drawings. It takes about 20 minutes to install. The chair is very comfortable to sit on. Its support and comfort are beyond expectations. It can relieve the fatigue of the waist and you won't feel very tired when sitting. The leather material is also good. It can be rotated, moved up and down, and can be moved. The armrests can also be moved up and down. This price is worth it. Overall, I'm very satisfied and comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
★★★★★ 5
Very comfortable chair!
Color: Black
This office chair is a great addition to my bedroom. It offers really nice comfort because of its thick and cushioned back which helps make long hours at a desk much more enjoyable. The adjustable height is really nice as it makes this chair extremely versatile. The armrests are sturdy and positioned well for typing or resting your arms. They also move back if you don’t like them. The assembly was straightforward and didn’t take long as the instructions were clear and easy to follow. The wheels roll really nice and don’t get stuck. This chair is really comfortable and nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
★★★★★ 5
Very Comfortable
Color: Black, Color: Black
Very easy to assemble , only 7 steps, and the tools are included.Great quality , material quality is high.The cushion supports my lower back. Very comfortable.price is reasonable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
★★★★★ 5
great
Color: Black
Excellent chair for shorter users! The seat height and lumbar support fit perfectly, providing great comfort even after long hours of work. The PU leather looks sleek and is easy to clean. The wheels roll smoothly, and the 360° swivel works perfectly. Assembly was simple and quick.
Great quality and amazing value for the price. Highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
Very sturdy
Color: Black, Color: Black
Good comfort level ✔
The seat cushion is soft but doesn't sag, and the armrests also provide some cushioning.
Easy to clean ✔
The leather surface can be easily wiped clean with a damp cloth, making it ideal for use on tables with drinks or snacks.
Simple installation, clear instructions
"The cushions on the chair back and armrests are soft enough, not too hard.
It offers good value for money; the price is reasonable, but the seating comfort is better than I expected.
"Suitable for daily office work or study."
The seat cushion is very comfortable, and the back support is excellent.
Adjustable height, smooth
The chair is sturdy No shaking
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026
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