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Gen III Hemi HP EFI

  • Shop Holley HP EFI wiring harnesses and harness kits for your engine management installation. Explore main engine, injector and ignition harnesses for GM LS, Ford, Gen III HEMI and TPI/Stealth Ram applications, plus universal harnesses and adapter cables for custom setups.

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Gen III Hemi HP EFI

Shop Holley HP EFI systems, ECU and harness kits, and fuel injection accessories. Explore options for GM LS, Ford, GM TPI and Holley Stealth Ram applications, plus universal multi-port injection retrofit kits. Find wiring and components for your engine management upgrade.