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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Holley EFI Terminator X Stealth 4150 2x4 - Shiny 550-10748 Injectors 800 1500 HP Features: Bolt on 2x4 4150 Flange Carburetor Replacement Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb Hr Injectors Internal 1bar MAP sensor, built into the Terminator X ECU External fuel pressure regulator required, set to a base pressure of 58. 5 PSI, such as Holley part # 12 886 Integrated ignition timing control High Resolution Full Color Touchscreen for Initial Setup, Tuning, and
8 Injectors - 800-1500 HP
Features:
- Bolt on 2x4 4150 Flange Carburetor Replacement
- Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr Injectors
- Internal 1bar MAP sensor, built into the Terminator X ECU
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as Holley part # 12-886
- Integrated ignition timing control
- 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!
- OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service
- 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
- Available in 3 finishes: Shiny, Black, and Gold
Specs:
| Accelerometer Support | Yes |
|---|---|
| Boost Control | Yes |
| Brand | Holley EFI |
| CAN-BUS Support | Yes |
| CFM | 950 |
| 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 | 4150 |
| Flange Style | Squarebore |
| 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 |
| 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 | 6AN |
| 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 |
| Sale Category | Air and Fuel Delivery |
| Self-Tuning | Yes |
| Terminator LS Options | Fuel, Spark |
| Throttle Bore | 1.75 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
4.7 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 3
Okay
I like that it fits my umbrella well, hinges open for easy application and removal, and that it has enough light for us to see our food at night.
I do not like that half of the outer lights do not work part of the time until I take out the batteries and swap them around.
Fine enough for the price, not worth the hassle of returning.
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Reviewed in the United States on May 10, 2025
★★★★★ 5
Perfect!
Lightweight and easy to use! Love the three light settings.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Easy to use.
Works well. Light is bright. Our new patio umbrella does not have e a center pole, so the lights get somewhat blocked. But still pretty useful.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Easy portability & Strong umbrella support
Size: 19inch
Its exactly as advertized!
Pros:
• rolls well
• medium sized (not a tripping hazard & corner fit under the edge of all my furniture)
• holds tall (through center of table) umbrella while open in minor wind with water-filled option.
• multiple size umbrella pole insert included
• Clear instructions.
• easy to use brakes (on 2 wheels for security...4 wheels would be annoying to use every day)
Cons:
• will still roll with brakes on with a little force when I'm being lazy...it should not be this easy (I usually have a corner of the stand tucked under a piece of furniture anyways)
• I would call this "light heavy duty" rather than "sturdy heavy duty" with water-filled option. I'd imagine sand + water as suggested would actually be heavy duty.
• re-design suggestion: base of umbrella could extend down below the water tank for sturdier hold, but this is the best I've found.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Good buy
Size: 19inch
Filing it with sand (50 lbs) was a very slow process, but I got it done. The wheels are very convenient for moving the umbrella around, and the wheel locks seems to work well. So far I'm quite satisfied with the base.
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Reviewed in the United States on May 17, 2026