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Holley ECU Mounting Brackets 554-156 Computer Brackets, EFI, Dominator ECU, Bracket, Steel, Black Finish, for Under Passenger Seat, Ford, Mustang, Fox Body, Each

SKU: HLY554-156

Computer Mounting Brackets

Holley ECU Mounting Brackets 554-156 Computer Brackets, EFI, Dominator ECU, Bracket, Steel, Black Finish, for Under Passenger Seat, Ford, Mustang, Fox Body, Each

SKU: HLY554-156

Computer Mounting Brackets
A$230.00
IN STOCK! Est Ship 4-7 days. In stock at 1 location (more than 10 available)

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Description


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:15:11

Data: v4.2 - Upd: 2026-11-09 03:55:56

Features

Vehicle Compatibility and Return Conditions.

This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.

Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.

Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.

(keyword: ecu)

Note on Vehicle Configuration

This listing includes the term "driver" or "passenger". Please note that this may refer to a region specific variation based on vehicle configuration (LHD/RHD) or regional preferences. Much of our database relates to US sourced products where "Driver" typically refers to the left-hand side in LHD vehicles, and "passenger" to the right. In RHD vehicles, this terminology is reversed. Review product details carefully for compatibility. Contact support if you have any questions. StreetFX may not accept returns for special order products.

(keyword: passenger)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Holley, Hilborn, Holley Efi, Retrobright, Terminator X
StreetFX SKU hly554-156
SFX Item ID 4782429
Accounting SKU hly-554-156
Manufacturer SKU 554-156
Manufacturer UPC 090127072202
Alternative References 554-156, HLY-554-156, HOL554-156

Computer Mounting Brackets, Holley EFI, Dominator ECU, Mounting Bracket, Steel, Black Finish, for Under Passenger Seat, Ford, Mustang, Fox Body, Each

Holley ECU mounting brackets allow you to comfortably install either the Dominator ECU, Holley HP, Terminator X, or Terminator X-MAX under your Mustang's front passenger seat. They're designed to work with stock seats and seat tracks (modified/race seats may or may not accommodate them). You simply route all your ECU harnesses through the firewall--properly route the wires, install the unit followed by the ECU, and then reconnect your wires and go! Use your laptop to fine-tune the ECU without popping the hood and protect it from engine bay heat with Holley ECU mounting brackets. Order the brackets recommended for your application.

Product Attributes
BrandHolley
Manufacturer's Part Number554-156
Part TypeComputer Mounting Brackets
Product LineHolley ECU Mounting Brackets
UPC090127072202
Mounting Bracket MaterialSteel
Mounting Bracket ColorBlack
QuantitySold individually.
NotesBracket is exclusively made to mount a Holley Dominator ECU under the front passenger seat. Will only work with factory seats and seat tracks.

Compatibility

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