Holley | Holley EFI Engine Main Harness

Holley – EFI Engine Main Harness

Description

The Holley EFI Engine Main Harness (p/n 558-128) is designed specifically for fuel-injected Ford Small Block engines, including 5.0L and 5.8L Windsor powerplants. It provides plug-and-play ignition capability with Holley's Dual Sync and HyperSpark distributors. For applications with a TFI distributor, ignition adapter 558-305 is required. The harness comes pre-terminated with the Ford PWM IAC connector, compatible with the OEM idle air control motor commonly found on late-1980s and early-1990s engines. Compatible with Holley EFI Dominator, HP, Terminator X and Terminator X Max ECUs. For applications using OEM Ford fuel injectors, use injector harness 558-209.

Specifications

• Brand: Holley
• Part Number: 558-128
• Application: Fuel-injected Ford Small Block 5.0L / 5.8L Windsor engines
• Plug-and-play ignition: Dual Sync and HyperSpark distributors
• Required for TFI distributor: ignition adapter 558-305
• Pre-terminated Ford PWM IAC connector included
• Compatible ECUs: Holley EFI Dominator, HP, Terminator X, Terminator X Max
• For OEM Ford injectors: use injector harness 558-209
• Application: Universal – not vehicle-specific
• Condition: New
• Sold and shipped by GBP Performance

Note:

• Livraison GRATUITE / FREE Delivery