CAN Extension Harness 9in Length

The HOLLEY CAN Extension Harness 9in Length (part number 558-428) is a specialized wiring extension designed for use with HOLLEY EFI systems. This 9-inch black rubber-coated harness extends connectivity between CAN modules, making it ideal for builders and enthusiasts working on custom installations or engine swaps.

This harness maintains signal integrity across electronic fuel injection, ignition, and sensor networks that rely on the Controller Area Network protocol. The durable outer jacket is designed to resist fuel contact, oil exposure, and temperature fluctuations, which are common in automotive environments.

Builders installing HOLLEY EFI systems or integrating auxiliary modules will find this extension harness essential for bridging controller-to-harness distances, especially in mid-engine conversions. Its compact design minimizes routing complexity, ensuring a reliable connection in challenging installation scenarios.