Holley 558-312 HP EFI Sub-Harnesses for Smart Coil Ignition Systems

The Holley 558-312 HP EFI Sub-Harnesses are designed for seamless integration with Holley's advanced EFI systems, including the Dominator and HP series. This universal wiring harness simplifies the connection of smart coils and ignition coils, providing reliable electrical continuity for high-performance engine setups. Crafted with quality materials, it ensures durability and consistent performance under demanding conditions. The harness features precise connectors and a compact design, making installation straightforward and secure. Suitable for custom and professional automotive applications, this harness enhances ignition system reliability and tuning flexibility. Whether upgrading or replacing, the Holley 558-312 ensures your EFI setup operates smoothly and efficiently, supporting optimal engine performance and responsiveness.

Features:

• Universal compatibility with Holley HP and Dominator EFI systems

• Designed for smart coil and ignition coil wiring

• Durable construction with high-quality materials

• Compact and easy to install wiring harness

• Reliable electrical connection for high-performance applications