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Description
Holley EFI Terminator X Stealth 4150 Secondary Throttle Body - PolishedHolley EFI Terminator X Stealth 4150 Secondary Throttle Body Polished 8 Injectors 800 1500 HP Overview If you are piecing together your EFI system or suffered damage to your current throttle body, we have made it easier to get the parts you need. You no longer need to buy an entire EFI kit to get the service part you need to get back on the street or the track! Features: Bolt on 2x4 4150 Flange Carburetor Replacement Supports up to 1500 HP Naturally
Holley EFI Terminator X Stealth 4150 Secondary Throttle Body - Polished8 Injectors - 800-1500 HP
Overview
If you are piecing together your EFI system or suffered damage to your current throttle body, we have made it easier to get the parts you need. You no longer need to buy an entire EFI kit to get the service part you need to get back on the street or the track!
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
Details:
- Color: Polished
- Ignition Type: Universal
- Injector Size: 100 lb/hr @ 58.5 PSI
- Max Horsepower Rating: 650 Naturally Aspirated
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
4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 3
Stain on collar
I was disappointed to see this stain on the collar. The fit is great & feels heavy & well made. Not sure why it would be packaged with a stain on it & since it’s white it’s even more noticeable
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Reviewed in the United States on December 31, 2022
★★★★★ 5
Material and stitching so it doesn't look cheap.
Good quality for the price. Not wool. It meets my needs. I don't wear sweaters that often so buying a pricey one makes no sense. These look great when they are new.
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Reviewed in the United States on December 15, 2025
★★★★★ 5
Great jacket!
Size: Medium, Color: Green
This jacket is super stylish, fits perfect, and is extremely warm. I gave this as a gift and the person loved it. It seems like a great value and looks like it will last a long time!
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Reviewed in the United States on December 25, 2025
★★★★★ 5
Excellent quality - great buy! Looks sharp!
Size: Large, Color: Gray, Size: Large, Color: Gray
Great quality - this is a medium weight coat. Perfect as a car coat but too thin for cold winter days if you had to be outside for long periods of time. The fit is just perfect. Purchased a size large for a man 5’6 175 lbs with a small belly so peacoat double breasted look - looks great! Lining is standard and the grey color is very appealing. This is soft feeling coat made to look like wool without the heavy rougher wool feel. Only issue is that the coat comes packaged in a small bag and so when you open it the coat it totally wrinkled. You can knock out the wrinkles in the dryer with a wrinkle release dryer sheet or use a garment steamer but honestly the dryer trick is the key.
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Reviewed in the United States on February 12, 2025
★★★★★ 4
Long enough sleeves for a tall guy
Size: Large, Color: Green
I’m 6’3” and skinny, and was very impressed to find the sleeves were long enough for me in a large! The overall fit of the coat is boxy or straight, while I would have preferred a slimmer cut, I’m just so happy that the sleeves fit!
The liner is nice, interior breast pockets on both sides are super convenient, and I love the green.
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Reviewed in the United States on January 15, 2026