Holley EFI Terminator X Stealth 4150 - Black 550-1005

Vendor: Holley EFI
SKU: 550-1005
20% Off
Sale Price $2,249.95 Regular Price $2,812.95
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8 Injectors - supports up to 1250hp (Forced Induction)

The Terminator X Stealth 4150 1250HP EFI system from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications. The Terminator X ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications? Terminator X Max Stealth 4150 kits provide transmission control for Pre-2009 GM 4L60E/4L80E Transmissions (Part numbers 550-1014, 550-1015, 550-1016)

Features:

  • Bolt on 4150 Flange Carburetor Replacement
  • Contains 8, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications
  • Terminator X Max Stealth 4150 kits provide transmission control for Pre-2009 GM 4L60E/4L80E Transmissions (Part numbers 550-1014, 550-1015,550-1016)
  • Internal 1bar MAP sensor, built into the Terminator X ECU.
  • All of the wiring exits below the rear fuel injector cover, for a completely stealth installation
  • Timed spark port for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor
  • Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions
  • External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as Holley part # 12-886
  • Integrated ignition timing control improves idle stability, fuel economy, and wide open throttle performance
  • 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
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn
  • OEM Style TPS/IAC for years of dependable service
  • Available in 3 finishes: Shiny, Black, and Gold
Shipping Policy

Cancellations

Once an order is placed, in most cases it cannot be cancelled as they are sent for fulfillment almost immediately after receiving the order. If there is an ability to cancel the order, the buyer is responsible for the transaction fees charged from the transaction.

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In-stock orders are typically processed and shipped within 1–2 business days of receiving payment, unless otherwise stated on the product page. Orders placed on weekends or holidays will be processed on the next business day.

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Return Policy

Return Period

You have up to 30 days from the date of purchase to return eligible items.

Condition of the Item

A 20% restocking fee will apply to cover inspection, processing, and repackaging costs.

Items must be returned in new, unused condition and include all original packaging, hardware, and documentation.

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The cost of return shipping is the responsibility of the buyer unless the item was received damaged, defective, or incorrect.

Return Authorization

Before returning any item, please contact our customer service team to obtain a Return Merchandise Authorization (RMA) number. Items returned without an RMA may not be accepted.

Refund Processing

Once the returned item is received and inspected, we will initiate the refund process. Please allow 2–5 days for the refund to be processed and credited to the original payment method. Bank processing times may vary.

Damaged or Defective Items

If you receive a damaged, defective, or incorrect item, contact us immediately for assistance. We’ll work quickly to resolve the issue or send a replacement.

Final Sale Items

Certain items may be marked as Final Sale and are not eligible for return or exchange. These will be clearly noted on the product page.

Disclaimer

All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

For any questions or concerns, please contact us — we’re always happy to help.

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