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Holley EFI

Holley EFI Transmission Harness - T-56

Terminator X Max ECUs on V3 Build 100 or later - Holley EFI V6 Build 300 or later

Part # 558-481 Be the first to write a review

Holley EFI Transmission Harness - T-56

In Stock
Free Shipping - Lower 48 US States
$204.95
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3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

See Emissions Details

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Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!

Brand Holley EFI
Emission Code3
Harness ApplicationGM
Harness TypeTransmission
Product TypeTransmission Harness
UPC090127478417
Part Number558-481
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.


The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle


WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
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EFI selection chart
Requires: Terminator X Max ECU with V3 Build 100, or Holley EFI Dominator ECU on Holley EFI V6 Build 300, or later.

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    *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.