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Holley HP EFI Universal Retrofit Engine Management Systems 550-500 Fuel Injection Systems, Retrofit, Management, Multi Point, 4-barrel, 4150 Flange, Sensors, Fuel Rails, Regulator, Wire Harness, Kit

SKU: HLY550-500

Fuel Injection Systems

Holley HP EFI Universal Retrofit Engine Management Systems 550-500 Fuel Injection Systems, Retrofit, Management, Multi Point, 4-barrel, 4150 Flange, Sensors, Fuel Rails, Regulator, Wire Harness, Kit

SKU: HLY550-500

Fuel Injection Systems
A$7,855.40
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.
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Description

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.

Part Type

Fuel Injection Systems

Data: v4.2 - Upd: 2026-10-13 18:46:04

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
550-500
Product Attributes - Part Type
Fuel Injection Systems
Product Attributes - Product Line
Holley HP EFI Universal Retrofit Engine Management Systems
Product Attributes - UPC
090127666883
Product Attributes - Fuel Injection Style
Multi-port
Product Attributes - Fuel Injection System Type
Single 4-Barrel Throttle Body (4150 Flange)
Product Attributes - Timing Control Compatible
Yes
Product Attributes - ECM Included
Yes
Product Attributes - Self Tuning
Yes
Product Attributes - User Tunable
Yes
Product Attributes - Fuel System Included
None
Product Attributes - Ignition System Included
None
Product Attributes - Power Distribution Included
None
Product Attributes - User Interface Included
None
Product Attributes - EGR
No
Product Attributes - Transmission Controller Included
No
Product Attributes - Metering Style
Speed density
Product Attributes - Multi-Port Fuel Rails Included
Yes
Product Attributes - Throttle Body Included
Yes
Product Attributes - Throttle Body Mounting Flange
4-barrel square bore
Product Attributes - Venturi Quantity
4
Product Attributes - Injectors Included
No
Product Attributes - Calibration Module Included
No
Product Attributes - Wiring Harness Included
Yes
Product Attributes - Oxygen Sensor Included
Yes
Product Attributes - Fuel Pressure Regulator Included
Yes
Product Attributes - MAP Sensor Included
Yes
Product Attributes - IAT Sensor Included
Yes
Product Attributes - TPS Sensor Included
Yes
Product Attributes - IAC Motor Included
Yes
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Holley
StreetFX SKU hly550-500
SFX Item ID 4784611
Supplier Item Code 4784611
Manufacturer SKU 550-500
Manufacturer UPC 90127666883
Alternative References HOL550-500, 4-barrel

Compatibility

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