Holley 550-604 Engine Control Module and Wiring Harness Kit for V8 Multi-Port Fuel Injection

The Holley 550-604 Engine Control Module (ECU) and wiring harness kit is designed for V8 multi-port fuel injection systems, providing precise engine management and reliable performance. This comprehensive kit includes a high-performance ECU and a durable wiring harness, optimized for use in various automotive applications requiring multi-port fuel injection control. The ECU features advanced electronic control tailored to V8 engines, ensuring optimal fuel delivery, ignition timing, and engine responsiveness. The wiring harness is engineered for ease of installation and compatibility with Holley’s EFI systems, delivering seamless integration and robust electrical connections. Built with quality components, this kit offers durability and consistent operation under demanding conditions, making it suitable for custom builds, performance upgrades, and aftermarket modifications. The Holley 550-604 kit does not restrict airflow and is not designated for truck freight only, facilitating flexible installation options across different vehicle types. Whether upgrading an existing system or building a new fuel injection setup, this kit provides the essential components needed for reliable, high-performance engine control.

Features:

• Engine control module designed for V8 multi-port fuel injection systems

• Includes wiring harness for seamless electrical connections

• Optimized for precise fuel delivery and ignition timing

• Durable construction suitable for demanding automotive environments

• Compatible with Holley EFI systems for easy integration