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Xmas Gift Idea Holley Efi- 558-112 Main Engine Harness For 58x Ls W/tbi Save 50% Now [mTbIAykV]

$58.99 $188.99 -69%

Holley EFI Main Engine Harness for 58X LSIntroducing the Holley EFI- 558-112 Main Engine Harness, a precision-engineered solution designed for the 58X/4x Gen 4 LS engines equipped with Terminator Throttle Body Fuel Injection. This high-quality harnes

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Holley EFI Main Engine Harness for 58X LS

Introducing the Holley EFI- 558-112 Main Engine Harness, a precision-engineered solution designed for the 58X/4x Gen 4 LS engines equipped with Terminator Throttle Body Fuel Injection. This high-quality harness is the perfect match for your Terminator X, X Max, Terminator, HP, and Dominator ECUs, ensuring seamless integration with Terminator or Terminator Stealth style Throttle Body Injection units.

Key Features and Specifications

This main engine harness is tailored to meet the specific requirements of Gen 4 58x LS engines. It comes with essential components such as crank and cam sensor plugs, Odd/Even LS coil harness plugs, and a bulkhead connector for 534-227, 534-225, and similar throttle body injection units. The harness is built to provide a reliable and efficient connection, enhancing the performance and fuel efficiency of your engine.

Practical Uses and Benefits

With the Holley EFI- 558-112 Main Engine Harness, you can expect a range of practical benefits. This harness is ideal for enthusiasts and professionals looking to upgrade their Gen 4 58x LS engines with advanced fuel injection systems. Its compatibility with various ECUs and throttle body injection units makes it a versatile choice for custom builds.
  • Enhanced Performance: Experience improved power and fuel efficiency with the advanced fuel injection system.
  • Seamless Integration: The harness is designed to work seamlessly with Terminator and Terminator Stealth style Throttle Body Injection units, ensuring a hassle-free installation.
Whether you're a DIY enthusiast or a professional mechanic, this harness is a must-have for your next project.

What Our Customers Say

January 4, 2026

Absolutely no complaints!

It's a very well-made and reliable maker.

- Sevyn D..

January 4, 2026

Absolutely no complaints!

The product is truly top of the line.

- James M..

January 4, 2026

Absolutely no complaints!

This is a very satisfying product to own and use.

- Satisfied_Sue.

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