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Applications for HLY-558-503

Holley EFI Systems Main Wiring Harnesses 558-503

HLY-558-503

Not Yet Reviewed

Part Number: HLY-558-503

Estimated Ship Date: Oct 19, 2026

$899.95

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Applications

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Results Found: 23

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1955

Ending Year:

1957

Engine Type:

Engine Size:

4.3L/265

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1957

Ending Year:

1967

Engine Type:

Engine Size:

4.6L/283

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1962

Ending Year:

1969

Engine Type:

Engine Size:

5.3L/327

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1964

Ending Year:

1967

Engine Type:

Engine Size:

5.4L/327

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1967

Ending Year:

1969

Engine Type:

Engine Size:

4.9L/302

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1967

Ending Year:

2002

Engine Type:

Engine Size:

5.7L/350

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1968

Ending Year:

1969

Engine Type:

Engine Size:

5.7L/350

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1968

Ending Year:

1973

Engine Type:

Engine Size:

5.0L/307

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1970

Ending Year:

1980

Engine Type:

Engine Size:

6.6L/400

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1975

Ending Year:

1976

Engine Type:

Engine Size:

4.3L/262

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1976

Ending Year:

2002

Engine Type:

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1979

Ending Year:

1982

Engine Type:

Engine Size:

4.4L/267

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1955

Ending Year:

1957

Engine Type:

Engine Size:

4.3L/265

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1957

Ending Year:

1967

Engine Type:

Engine Size:

4.6L/283

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1962

Ending Year:

1969

Engine Type:

Engine Size:

5.3L/327

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1964

Ending Year:

1967

Engine Type:

Engine Size:

5.4L/327

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1967

Ending Year:

1969

Engine Type:

Engine Size:

4.9L/302

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1967

Ending Year:

2002

Engine Type:

Engine Size:

5.7L/350

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1968

Ending Year:

1973

Engine Type:

Engine Size:

5.0L/307

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1970

Ending Year:

1980

Engine Type:

Engine Size:

6.6L/400

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1975

Ending Year:

1976

Engine Type:

Engine Size:

4.3L/262

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1976

Ending Year:

2002

Engine Type:

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application 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.

Stock EFI System:

Yes

EFI System Manufacturer:

Holley

Universal:

Make:

CHEVROLET

Beginning Year:

1979

Ending Year:

1982

Engine Type:

Engine Size:

4.4L/267

Engine Family:

Chevy small block Gen I

Application 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.

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