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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
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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
4.6 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Much better than the old model.
Style: L50 SES
I had an old s11 that finally died. This one is much better. It maps the house and follows a snake pattern. Once the mapping is finished you can select what rooms you want to clean. I like the self emptying feature. Plenty of battery life.
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Reviewed in the United States on December 19, 2024
★★★★★ 3
Good performance, flaky Wi-Fi connection
Style: L50 SES
The L50 physically works great - it does a good job of picking up dust and dirt at the end of the day. The pathfinder and route planning algorithm is fairly efficient at determining the best way to clean a room. Sometimes it kicks around bits of dust with its spinning brush without picking it up, but it's not often.
What has been terrible, however, is the Wi-Fi support. Since our provider disabled 2.4 GHz support from their router modem without notice, I use a Mac Mini to supply the 2.4 GHz signal, and even though the Eufy is next to it and my phone gets full signal strength, it still can't connect to it half the time. After it fails to connect, it needs to be restarted or even reset to try to get the connection again. Support doesn't seem to be helpful in offering a solution.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Quality product
Size: 26 Pcs for Roborock Saros 10R
Very nice quality replacement parts. Worth the money, also fast shipping from the seller.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great for Robodock
Size: 26 Pcs for Roborock Saros 10R
Works great for my Robodock.
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Reviewed in the United States on May 11, 2026
★★★★★ 5
great value
Size: 26 Pcs for Roborock Saros 10R
good value for money
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Reviewed in the United States on May 27, 2026