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GM TPI and Stealth Ram EFI HARNESS KIT

GM TPI and Holley Stealth Ram™

PART# 558-503

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Overview

An EFI system depends heavily on being supplied a clean and constant voltage source. The grounds of an electrical system are just as important as the power side. Our Holley EFI Harness Kit comes complete with the main harness, power harness and injector harness to support your primary system!

Features:

  • Harness Kit Includes: Stealthram/TPI Main Harness, Main Power Harness, V-8 Injector Harness, HEI Ign Harness and Ignition Adapter & Tach Input
  • Simple Installation
  • Works with HP or Dominator ECU's

Specs

BrandHolley EFI
Emission Code4
Harness ApplicationGM
Ignition TypeCD Ignition (No Timing Control)
Injector ConnectorJetronic / Minitimer (Bosch)
Product TypeHarness Kit
Part Number558-503

Emissions

4

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

Tech Resources

Holley EFI Support Forums
Holley EFI Dealers
Do you need a custom kit built for your application? Do you need a system installed and tuned? Click here to find the Holley EFI dealer in your area!
EFI selection chart
Instructions for Part# 558-503
NOTICE: You will need to purchase a ECU and O2 Sensor to make this a complete kit.
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