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Description
Holley EFI Terminator X Stealth 4150 Secondary Throttle Body - Gold 534-300Secondary Service Throttle Body 4 Injectors 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
Secondary Service Throttle Body - 4 Injectors
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:
| Adjustable | Yes |
|---|---|
| Brand | Holley EFI |
| Color | Gold |
| Emission Code | 3 |
| Finish | Gold |
| Flange Size | 4150 |
| Flange Style | Squarebore |
| Fuel Injectors Included | Yes |
| Fuel System Type | EFI |
| Grade Type | Performance |
| Idle Air Control Motor Included | No |
| Ignition Type | Universal |
| Injector Size | 100 lb/hr @ 58.5 PSI |
| Max Horsepower Rating | 650 Naturally Aspirated |
| Mounting Hardware Included | No |
| Product Type | Throttle Body |
| Throttle Body Finish | Classic Gold |
| Throttle Body Material | Cast Aluminum |
| Throttle Body Spacer Included | No |
| Throttle Bore | 1.75 in. |
| Throttle Position Sensor Included | 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
4.9 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Firm yet comfortable
We have purchased several of these pillows over the past few years. They have held up well and held their shape and firmness, even with washing. They are the right height for neck comfort and we do not need to double up pillows anymore to get a good night's sleep. They are also a good firmness to rest against while sitting up in bed.
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Reviewed in the United States on January 2, 2025
★★★★★ 1
Is this a Casper or Tempurpedic?
When I went to wash the pillow covering I discovered that it iterally had a Tempurpedic factory pillow covering underneath the Casper factory pillow covering - leading me to believe that it was either a return item shipped out as new, and the previous owner actually returned a Tempurpedic pillow disguised as a Casper, or Casper is actually manufactured by Tempurpedic and uses the Casper brand to upcharge. Either way - it's turned out to be an overly expensive - mediocre pillow.
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Reviewed in the United States on July 25, 2025
★★★★★ 2
Does not cool, is hot actually
I am very disappointed with this product. I write a lot of reviews and give credit where credit is due. I wish credit was due here.
I bought this as a gift for my wife. She slept on it for a few nights and finally stated that it never cools and is hot instead. And so I tried it and found the same thing. I bought an inexpensive cooling pillow from Costco and we both found that one to cool a little bit and it isn’t hot.
I’m summary, you don’t always get what you pay for and at $100, this pillow does not deliver. It’s supportive and it seems well made, which is why I give it two stars. But it does not deliver any cooling. Save your money and try a different pillow.
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Reviewed in the United States on January 5, 2024
★★★★★ 5
Does what it claims, supportive and eliminates heat.
Size: King (Pack of 1), Style: Single Pack
Its a bit pricey however when it comes to sleep quality im glad to pay for name brand. No tossing or turning to escape to the cold side of the pillow. Feels firm which was concerning at first however once you settle in its very comfortable. Seems to be just how foam pillows are made. Happy with the purchase.
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Reviewed in the United States on May 4, 2022
★★★★★ 5
I have found the PERFECT pillow for me!!!
Size: King (Pack of 1), Style: Single Pack
I just absolutely never write a review on anything, but I have to praise this pillow from the rooftops! I have not slept this comfortably is so many years! I have plushness and support, my neck is in alignment, and when I turn to sleep on my side the pillow doesn’t block my airflow. This pillow is perfectly made for me!!!!
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Reviewed in the United States on December 8, 2022