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Holley HP, Terminator X, or Terminator X-Max ECU Bracket

Designed to mount all other Holley EFI ECU's under the passenger seat of a 1979-2004 Mustang.

PART# 554-157

$77.72   Suggested Retail
$69.95   Your Price
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Introducing Holley EFI ECU mounting brackets, allowing you to safely mount your ECU under the seat of a Foxbody Mustang.


  • Easy Installation of Holley HP, Terminator X, or Terminator X Max ECU in Your Mustang


BrandHolley EFI
Emission Code4
Product TypeEFI Part
Part Number554-157



This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

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

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