Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1065 Systems, Max, 4150, EFI, Four Injector, Throttle Body, Aluminum, Gold, Trans Control, Chevy, 4.8-7.0L, Kit
Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems 550-1065 Systems, Max, 4150, EFI, Four Injector, Throttle Body, Aluminum, Gold, Trans Control, Chevy, 4.8-7.0L, Kit
A$6,066.99
LOW STOCK! Est Ship 4-7 days.
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:15:13
Features
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly550-1065 |
| SFX Item ID | 4782453 |
| Accounting SKU | hly-550-1065 |
| Manufacturer SKU | 550-1065 |
| Manufacturer UPC | 090127107706 |
| Alternative References | 550-1065, HLY-550-1065, HOL550-1065 |
Fuel Injection Systems, Terminator X Max, Stealth 4150, 58X LS EFI, Four Injector, Throttle Body, Aluminum, Gold, Trans Control, Chevy, 4.8-7.0L, Kit
Holley Terminator Max X Stealth 4150 58X LS EFI systems feature four 100 lbs./hr. fuel injectors capable of supporting up to 650 hp naturally aspirated or 600 hp on forced induction applications. The Terminator X ECU provides fuel maps that self-learn and integrated ignition timing control, yielding improved idle stability, drivability, and horsepower at wide-open throttle! Holley Terminator Max X Stealth 4150 58X LS EFI fuel injection systems also include transmission kick-down provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 applications, as well as plug-and-play transmission control for GM 4L60 and 4L80 applications.
System features include:
• All wiring exits below the fuel injector bowls for a complete stealth installation
• Air entry machined to fit most stock-style air cleaners with air cleaner locator provisions
• Integrated ignition timing control offers plug-and-play with factory LS coil sub-harness and OEM LS coils (no external boxes/modules needed to run coil near plug)
• High-resolution, full-color touchscreen for initial setup, tuning, and gauge displays
• Simple calibration wizard—no laptop required
• Four inputs (12 V, ground, 5 V, and frequency) for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (fuel and oil pressure inputs are pre-terminated)
• Four outputs (ground, PWM -) for accessories such as fans, boost control, nitrous control, IAC kit, and more
• Genuine Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learning
• OEM-style TPS/IAC for years of dependable service
• Available in three finishes: shiny, black, and gold
• Compatible with Holley EFI digital dashes, gauges, and fuel system accessories
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 550-1065 |
| Part Type | Fuel Injection Systems |
| Product Line | Holley Terminator X MAX Stealth 4150 58X LS EFI Fuel Injection Systems |
| UPC | 090127107706 |
| Fuel Injection Style | Throttle body |
| Fuel Injection System Type | Single 4-Barrel Throttle Body (4150 Flange) |
| Maximum Horsepower with Gas | 650 |
| Timing Control Compatible | Yes |
| ECM Included | Yes |
| Self Tuning | Yes |
| User Tunable | Yes |
| Fuel System Included | None |
| Ignition System Included | None |
| Power Distribution Included | None |
| User Interface Included | 3.5 in. display |
| EGR | No |
| Transmission Controller Included | Yes |
| Metering Style | Speed density |
| Multi-Port Fuel Rails Included | No |
| Throttle Body Included | Yes |
| Throttle Body Mounting Flange | 4-barrel square bore |
| Venturi Quantity | 4 |
| Venturi Diameter (mm) | 44.45mm |
| Airflow Rate (cfm) | 950 cfm |
| Throttle Body Material | Cast aluminum |
| Throttle Body Color | Gold |
| Injectors Included | Yes |
| Injector Size (lbs/hr) | 100 lbs./hr. |
| Calibration Module Included | Yes |
| Wiring Harness Included | Yes |
| Oxygen Sensor Included | Yes |
| Fuel Pressure Regulator Included | No |
| MAP Sensor Included | Yes |
| IAT Sensor Included | Yes |
| TPS Sensor Included | Yes |
| IAC Motor Included | Yes |
| Quantity | Sold as a kit. |
| Notes | External fuel pressure regulator required, set to a base pressure of 58.5 psi. |
| Special Attention | Kit designed for use with a 58x crank reluctor. Transmission controller will work with 1996 and newer 4L60E and 4L80E. |
Compatibility
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