Holley LSX Main Harness Connector Kit

The Holley LSX Main Harness Connector Kit provides OEM-quality connectors, pins, seals, and TPAs for every engine sensor, designed to simplify building custom engine harnesses for LSX engines. It pairs perfectly with Holley’s flying lead harness to save time and hassle when assembling your main engine wiring.

Key Features

OEM quality connectors including pins, seals, and TPAs for every engine sensor
Designed specifically for LSX engine wiring applications
Compatible with Holley EFI main harnesses
Pairs perfectly with Holley flying lead harness (part number 558-126) for custom builds

Fitment

Holley LSX EFI main harnesses
Custom LSX engine wiring harness builds

Note: Verify compatibility with your specific LSX engine and wiring setup before ordering. This kit is intended for use with Holley EFI components and requires basic wiring knowledge for installation.