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Holley

Holley EFI Systems Main Wiring Harnesses 558-503 Fuel Injection System Harnesses, EFI, Includes Stealth Ram/TPI Main, Power, Injector Harnesses, for HP, Dominator ECU, Chevrolet, Kit

SKU: HLY558-503

Fuel Injection System Wiring Harnesses
Holley EFI Systems Main Wiring Harnesses 558-503 Fuel Injection System Harnesses, EFI, Includes Stealth Ram/TPI Main, Power, Injector Harnesses, for HP, Dominator ECU, Chevrolet, Kit

Holley

Holley EFI Systems Main Wiring Harnesses 558-503 Fuel Injection System Harnesses, EFI, Includes Stealth Ram/TPI Main, Power, Injector Harnesses, for HP, Dominator ECU, Chevrolet, Kit

SKU: HLY558-503

Fuel Injection System Wiring Harnesses
A$2,211.50
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Choose EFI main power wiring harnesses from Holley to meet your needs. Several choices are offered—TBI, LS applications, multi-point, and un-terminated harnesses—to feed and carry your engine's electrical supply. Get wired for electronic fuel injection with Holley EFI systems main wiring harnesses.

Part Type

Fuel Injection System Wiring Harnesses

Data: v4.2 - Upd: 2026-10-13 18:48:02

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
558-503
Product Attributes - Part Type
Fuel Injection System Wiring Harnesses
Product Attributes - Product Line
Holley EFI Systems Main Wiring Harnesses
Product Attributes - UPC
090127721346
Product Attributes - Fuel Injection Style
Multi-port
Product Attributes - Metering Style
Speed density
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Includes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.

Reference Information

Brand Name/s Holley
StreetFX SKU hly558-503
SFX Item ID 4782556
Supplier Item Code 4782556
Manufacturer SKU 558-503
Manufacturer UPC 90127721346
Alternative References HOL558-503

Compatibility

Application Data
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1955
    Ending Year1957
    Engine TypeV8
    Engine Size4.3L/265
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1957
    Ending Year1967
    Engine TypeV8
    Engine Size4.6L/283
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1962
    Ending Year1969
    Engine TypeV8
    Engine Size5.3L/327
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1964
    Ending Year1967
    Engine TypeV8
    Engine Size5.4L/327
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1967
    Ending Year1969
    Engine TypeV8
    Engine Size4.9L/302
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1968
    Ending Year1969
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1968
    Ending Year1973
    Engine TypeV8
    Engine Size5.0L/307
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1980
    Engine TypeV8
    Engine Size6.6L/400
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1975
    Ending Year1976
    Engine TypeV8
    Engine Size4.3L/262
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1976
    Ending Year2002
    Engine TypeV8
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1979
    Ending Year1982
    Engine TypeV8
    Engine Size4.4L/267
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1955
    Ending Year1957
    Engine TypeV8
    Engine Size4.3L/265
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1957
    Ending Year1967
    Engine TypeV8
    Engine Size4.6L/283
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1962
    Ending Year1969
    Engine TypeV8
    Engine Size5.3L/327
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1964
    Ending Year1967
    Engine TypeV8
    Engine Size5.4L/327
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1967
    Ending Year1969
    Engine TypeV8
    Engine Size4.9L/302
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1968
    Ending Year1973
    Engine TypeV8
    Engine Size5.0L/307
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1970
    Ending Year1980
    Engine TypeV8
    Engine Size6.6L/400
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1975
    Ending Year1976
    Engine TypeV8
    Engine Size4.3L/262
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1976
    Ending Year2002
    Engine TypeV8
    Engine Size5.0L/305
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.
  • Stock EFI SystemYes
    EFI System ManufacturerHolley
    UniversalNo
    MakeCHEVROLET
    Beginning Year1979
    Ending Year1982
    Engine TypeV8
    Engine Size4.4L/267
    Engine FamilyChevy small block Gen I
    Application NotesIncludes Stealthram/TPI main harness, main power harness, injector harness, HEI ignition harness, ignition adapter, and tachometer input. Works with HP or Dominator ECU's.

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