SKU: HLY558-116
UPC: 090127727454
MPN: 558-116
The Main Wire Harness Hemi Late W/ TPS & IAC from Holley is designed for builders and mechanics who are upgrading late-model Hemi engines with modern fuel injection systems. This harness simplifies the wiring process by providing a complete, pre-assembled solution that integrates throttle position sensing (TPS) and idle air control (IAC) functionality into a single plug-and-play package.
By eliminating the complexity of custom wiring, this harness reduces fabrication time and ensures reliable sensor communication with your ECU. It is purpose-built with the TPS and IAC connectors pre-wired and routed, minimizing the risk of miswiring that can lead to drivability issues or fault codes. The harness is optimized for late-model Hemi engine bay layouts, ensuring proper signal integrity for critical functions like throttle input and idle airflow correction.
This wiring harness is ideal for engine builders, fuel injection installers, and enthusiasts performing comprehensive Hemi engine modifications where OEM wiring is unavailable or incompatible. It pairs seamlessly with Holley EFI controllers, making it a valuable addition for those converting a carbureted Hemi to EFI or installing Holley's engine management on a modern Hemi platform.
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