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Hero image 0 of Holley EFI 558-121 Electronic Throttle Harness, 0 of 6

HOLLEY EFI

Holley EFI 558-121 Electronic Throttle Harness

Name: Holley EFI 558-121 Electronic Throttle Harness
Brand: HOLLEY EFI
SKU: 226278394
Price: 511.95 USD
Availability: InStock

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Key item features

2x4 Side Mount Stealth Throttle Bodies â€" Provide the great looks of a classic Holley 4150 Carburetor, without any of the hassles
Multiple Color options allows for any Terminator Stealth EFI system to be upgraded to a 2x4
Plug and Play Main Harness provides a clean finished appearance and allows for a quick install!
Laptop Tuning is Required with this upgrade, we recommend taking your vehicle to a certified Holley EFI Tuner/Installer

Specs

Manufacturer part number
558-121
Vehicle model
558-121
Vehicle fitment type
Specific
Automotive parts division
Performance
Brand
HOLLEY EFI
Finish
Machined

Current price is $511.95

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Columbus, 43215

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About this item

Product details

2x4 Main Harness;

Introducing 2x4 Terminator Stealth EFI upgrade components. The wait is over. These upgrade components allow you to use your current Terminator Stealth EFI throttle body, install a new main harness, and slave throttle body, and you are finished. This upgrade is also perfect for anyone wanting to convert their 2x4 supercharged combo over to Electronic Fuel Injection!;

2x4 Side Mount Stealth Throttle Bodies â€" Provide the great looks of a classic Holley 4150 Carburetor, without any of the hassles
Multiple Color options allows for any Terminator Stealth EFI system to be upgraded to a 2x4
Plug and Play Main Harness provides a clean finished appearance and allows for a quick install!
Laptop Tuning is Required with this upgrade, we recommend taking your vehicle to a certified Holley EFI Tuner/Installer

info:

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Specifications

Manufacturer part number

558-121

Vehicle model

558-121

Vehicle fitment type

Specific

Automotive parts division

Performance

Warranty

Warranty information

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