Home / Shop / Holley EFI Dominator Transmission Harnesses for 1976-2002 CAMARO, FIREBIRD - 558-481 Harnesses, EFI, Control Harness, F-Body, T-56 Tranny, Plug-and-Play, VSS, Reverse Lockout, Terminator X, Max X ECUs, Each

Holley EFI Dominator Transmission Harnesses for 1976-2002 CAMARO, FIREBIRD - 558-481 Harnesses, EFI, Control Harness, F-Body, T-56 Tranny, Plug-and-Play, VSS, Reverse Lockout, Terminator X, Max X ECUs, Each

SKU: HLY558-481

Transmission Harnesses

Holley

Holley EFI Dominator Transmission Harnesses for 1976-2002 CAMARO, FIREBIRD - 558-481 Harnesses, EFI, Control Harness, F-Body, T-56 Tranny, Plug-and-Play, VSS, Reverse Lockout, Terminator X, Max X ECUs, Each

SKU: HLY558-481

Transmission Harnesses

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

Holley EFI Dominator transmission harnesses provide control of your Tremec. The harnesses are terminated for VSS, reverse lockout, and reverse lights. Choose the one designed for your build.

Part Type

Transmission Harnesses

Data: v4.2 - Upd: 2026-10-13 18:46:54

Specifications

Product Attributes - Brand: Holley
Product Attributes - Manufacturer's Part Number: 558-481
Product Attributes - Part Type: Transmission Harnesses
Product Attributes - Product Line: Holley EFI Dominator Transmission Harnesses
Product Attributes - UPC: 90127478417
Product Attributes - Quantity: Sold individually.
Product Attributes - Notes: For use with Terminator X Max ECUs on V3 Build 100, or Holley EFI V6 Build 300, or later. Terminated for VSS, reverse lockout, and reverse lights.

Reference Information

Brand Name/s	Holley
StreetFX SKU	hly558-481
SFX Item ID	4784078
Supplier Item Code	4784078
Manufacturer SKU	558-481
Manufacturer UPC	90127478417
Alternative References	HOL558-481, T-56

Compatibility

Application Data

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1978
Ending Year	1976
Engine Type	V8
Engine Size	7.5L/455
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1978
Ending Year	1981
Engine Type	V6
Engine Size	6.6L/400
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1979
Ending Year	1981
Engine Type	V6
Engine Size	6.6L/403
Engine Family	Oldsmobile V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1979
Ending Year	1979
Engine Type	V8
Engine Size	4.9L/301
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1981
Ending Year	1981
Engine Type	V8
Engine Size	4.3L/265
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1982
Ending Year	1983
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1983
Ending Year	1986
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1985
Ending Year	1992
Engine Type	V8
Engine Size	6.6L/400
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1987
Ending Year	1992
Engine Type	L4
Engine Size	5.7L/350
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1988
Ending Year	1989
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Oldsmobile V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1989
Ending Year	1979
Engine Type	V8
Engine Size	2.8L/173
Engine Family	Chevy small block Gen I
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1993
Ending Year	1997
Engine Type	V8
Engine Size	6.6L/403
Engine Family	Chevy small block Gen II (LT-based engines)
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1998
Ending Year	2002
Engine Type	V6
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM GT
Beginning Year	1994
Ending Year	1994
Engine Type	V8
Engine Size	4.9L/301
Engine Family	Chevy small block Gen II (LT-based engines)
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM GTA
Beginning Year	1989
Ending Year	1992
Engine Type	V8
Engine Size	3.1L/189
Engine Family	Chevy small block Gen I
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM GTA
Beginning Year	1981
Ending Year	1995
Engine Type	V8
Engine Size	3.4L/207
Engine Family	Chevy small block Gen I
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM GTA SE
Beginning Year	1981
Ending Year	1989
Engine Type	V6
Engine Size	4.3L/265
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	FORMULA
Beginning Year	1989
Ending Year	1976
Engine Type	L6
Engine Size	4.1L/250
Engine Family	GM inline 6-cylinder
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	FORMULA
Beginning Year	1989
Ending Year	1992
Engine Type	V8
Engine Size	5.0L/305
Engine Family	Chevy small block Gen I
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	FORMULA
Beginning Year	1989
Ending Year	1976
Engine Type	L6
Engine Size	6.6L/400
Engine Family	Chevy small block Gen I
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	FORMULA
Beginning Year	1993
Ending Year	1997
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Chevy small block Gen II (LT-based engines)
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	FORMULA
Beginning Year	1998
Ending Year	2002
Engine Type	V6
Engine Size	3.8L/231
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	S/E
Beginning Year	1982
Ending Year	1984
Engine Type	L4
Engine Size	2.5L/151
Engine Family	GM 4-cylinder
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	S/E
Beginning Year	1982
Ending Year	1986
Engine Type	V6
Engine Size	2.8L/173
Engine Family	Oldsmobile V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

Make	PONTIAC
Model	FIREBIRD
Submodel	S/E
Beginning Year	1982
Ending Year	1986
Engine Type	V8
Engine Size	4.9L/301
Engine Family	Pontiac V8
Transmission	Manual
Transmission Make	GM
Transmission Manufacturer Code	T-56
Drivetrain	RWD
Application Notes	For use with Terminator X Max ECU's on V3 build 100, or Holley EFI V6 build 300, or later.

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Holley EFI Dominator Transmission Harnesses for 1976-2002 CAMARO, FIREBIRD - 558-481 Harnesses, EFI, Control Harness, F-Body, T-56 Tranny, Plug-and-Play, VSS, Reverse Lockout, Terminator X, Max X ECUs, Each

Holley EFI Dominator Transmission Harnesses for 1976-2002 CAMARO, FIREBIRD - 558-481 Harnesses, EFI, Control Harness, F-Body, T-56 Tranny, Plug-and-Play, VSS, Reverse Lockout, Terminator X, Max X ECUs, Each

Description

Part Type

Specifications

Reference Information

Compatibility

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