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Applications for HLY-558-129
Holley EFI Terminator X LT Main Engine Harnesses 558-129
HLY-558-129
Not Yet Reviewed
Part Number: HLY-558-129
Estimated Ship Date from Texas: Monday 10/19/2026
Filters
Results Found: 9
Universal:
No
Make:
CHEVROLET
Beginning Year:
2014
Ending Year:
2020
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
5.3L/325
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2014
Ending Year:
2023
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
6.2L/376
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2015
Ending Year:
2023
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
6.2L/376
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2018
Ending Year:
2020
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
6.2L/376
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2019
Ending Year:
2023
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
5.3L/325
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2019
Ending Year:
2023
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
6.2L/376
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2020
Ending Year:
2023
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
6.2L/376
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2020
Ending Year:
2023
Engine Type:
V8
Engine Family:
CHEVY SMALL BLOCK GEN V V8 GAS
Engine Size:
6.6L/401
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
Universal:
No
Make:
CHEVROLET
Beginning Year:
2023
Ending Year:
2023
Engine Type:
V8
Engine Family:
CHEVY LT6 V8 GAS
Engine Size:
5.5L/333
Application Notes:
This harness is designed for use with Terminator X and X Max ECU's only.
