Holley HP EFI Universal Retrofit Engine Management Systems 550-501 Fuel Injection Systems, Retrofit, Management, Multi Point, 4-barrel, 4500 Flange, Sensors, Fuel Rails, Regulator, Wire Harness, Kit
Holley HP EFI Universal Retrofit Engine Management Systems 550-501 Fuel Injection Systems, Retrofit, Management, Multi Point, 4-barrel, 4500 Flange, Sensors, Fuel Rails, Regulator, Wire Harness, Kit
A$9,760.21
Special Order. Contact for ETA.
This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
We accept
Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:15:40
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 | hly550-501 |
| SFX Item ID | 4782858 |
| Accounting SKU | hly-550-501 |
| Manufacturer SKU | 550-501 |
| Manufacturer UPC | 090127666890 |
| Alternative References | 550-501, HLY-550-501, HOL550-501 |
Fuel Injection Systems, HP EFI Retrofit, Engine Management, Multi Point, 4-barrel, 4500 Flange, Sensors, Fuel Rails, Regulator, Wire Harness, Kit
Progammable EFI has been simplified! Holley HP EFI universal retrofit engine management kits make it easy to install multi-point fuel injection on your Mopar, Ford, or other type engine. Holley Performance universal retrofits are designed for 4150 and 4500 carburetor-style intakes. HP kits include injector bungs and un-machined fuel rails, so you can modify them to fit any single plane 4-barrel intake manifold. You'll also receive all necessary wiring, ECU, sensors, and a throttle body. Retrofit your engine for maximum performance with complete tunability via your laptop, or opt for self-tuning capabilities and rest assured that your fuel curves are accurate. It's a new era in fuel injection and it comes with a very appealing price tag, compliments of Holley and HP EFI universal retrofit engine management systems.
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 550-501 |
| Part Type | Fuel Injection Systems |
| Product Line | Holley HP EFI Universal Retrofit Engine Management Systems |
| UPC | 090127666890 |
| Fuel Injection Style | Multi-port |
| Fuel Injection System Type | Single 4-Barrel Throttle Body (4150 Flange) |
| 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 | None |
| EGR | No |
| Transmission Controller Included | No |
| Metering Style | Speed density |
| Multi-Port Fuel Rails Included | Yes |
| Throttle Body Included | Yes |
| Throttle Body Mounting Flange | 4500 Dominator |
| Venturi Quantity | 4 |
| Venturi Diameter (mm) | 54.00mm |
| Injectors Included | No |
| Calibration Module Included | No |
| Wiring Harness Included | Yes |
| Oxygen Sensor Included | No |
| Fuel Pressure Regulator Included | No |
| MAP Sensor Included | No |
| IAT Sensor Included | No |
| TPS Sensor Included | No |
| IAC Motor Included | No |
| Quantity | Sold as a kit. |
Compatibility
Loading compatibility information...
Keep shopping
More from Holley
