- Fuel, Carbs & Intakes
- Fuel Injection
- Holley Gen III Hemi Wiring Harnesses
Harnesses to Install a GEN III Hemi in Your Hot Rod
Take control of your Gen III Hemi with Holley Wiring Harnesses capable of controlling fuel#, spark#, transmission#, and more.
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Coil Adapter Harness
Drive-By-Wire Harness
Holley 558-417
Holley HEMI Drive-By-Wire Harness Early Harness with the larger TYCO/AMP Connector (2003-07 Car & 2003-06 Truck)
$219.95
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Fuel Injector Harness
Main EFI Wiring Harness
$655.95
Estimated to ship direct from manufacturer on 04/29/24, pending manufacturer availability.
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$655.95
Estimated to ship direct from manufacturer on 04/29/24, pending manufacturer availability.
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VVT Harness
Holley 558-131
Holley Variable Valve Timing (VVT) Harness for Gen III Hemi w/Terminator X or X Max EFI
$102.95
Estimated to ship direct from manufacturer in 24hrs
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Holley 558-132
Holley Variable Valve Timing (VVT) and Short Runner Valve (SRV) Harness for Gen III Hemi w/Terminator X or X Max EFI
$133.95
Estimated to ship direct from manufacturer in 24hrs
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