HOLLEY EFI 558-134 Engine Harness 090127140765 LS2/3/7 58X/4X

( Brand: Holley Efi ), ( Part Type: Engine Harness ), ( Manufacturer Part Number: 558-134 ), ( UPC: 090127140765 )

Review HOLLEY EFI Ls2/3/7 58x/4x Engine Main Harness Extended Length fits LS2

The Holley EFI 558-134 LS2/3/7 58x/4x Engine Harness is a high-performance wiring solution designed specifically for General Motors LS2, LS3, and LS7 engines. This engine harness is an essential component for any EFI (Electronic Fuel Injection) system installation, as it provides a reliable and efficient connection between various engine sensors and the EFI control module.

The 558-134 harness is constructed with top-quality materials that ensure durability and flexibility. It features a heavy-duty, UV-resistant Teflon-jacketed, and shielded wiring to protect against wear and damage. The wiring is also color-coded for easy identification and installation.

This engine harness includes connectors for various sensors, such as crank position, cam position, air temperature, manifold absolute pressure (MAP), and throttle position sensors. It also includes connectors for the ignition system, water temperature sensor, coolant temp sender, and fuel pressure regulator.

The 58x/4x configuration of this harness is designed for engines with 58 inputs (sensors) and 4 outputs (fuel injectors). This harness can be used with Holley EFI systems, such as the Holley EFI Dominator or Holley EFI AVS, to create a complete and high-performance EFI system for your LS engine.

The installation of this engine harness is straightforward, thanks to the detailed instructions provided in the included manual. Holley also offers technical support for any questions or concerns you may have during the installation process.

In summary, the Holley EFI 558-134 LS2/3/7 58x/4x Engine Harness is a high-quality and reliable solution for wiring your LS engine for EFI applications. Its durable design, color-coded wiring, and easy installation make it a popular choice among performance enthusiasts and professional builders.

The Holley EFI 558-134 LS2/3/7 58x/4x engine harness is a popular choice for those looking to convert their LS-series engine to electronic fuel injection. Here are some pros and cons to help you make an informed decision:

1. Compatibility: This harness is designed to work with LS2, LS3, and LS7 engines, making it a versatile option for those with different engine configurations.

2. Easy Installation: The plug-and-play design of the harness makes it relatively easy to install, even for those without extensive electrical experience.

3. Improved Performance: EFI systems offer improved fuel delivery and air/fuel ratio control, leading to better performance and fuel efficiency.

4. Flexibility: The harness is available in both 58x and 4x configurations, allowing it to accommodate different transmission setups.

5. Reliability: Holley is a well-known brand in the automotive performance industry, and their EFI systems are known for their reliability and durability.

1. Cost: The Holley EFI 558-134 LS2/3/7 58x/4x engine harness is a premium product, and the cost may be a deterrent for some enthusiasts.

2. Complexity: While the harness is designed for easy installation, the complexity of an EFI system can be intimidating for some, especially for those who are used to carbureted engines.

3. Compatibility with Accessories: Some accessories, such as vacuum pumps and power steering systems, may require additional wiring and modifications to work with the EFI system.

4. Calibration: Properly calibrating an EFI system can be a time-consuming and complex process, requiring specialized tools and knowledge.

The Holley EFI 558-134 LS2/3/7 58x/4x engine harness is an excellent option for those looking to upgrade their LS-series engine to electronic fuel injection. Its versatility, easy installation, improved performance, and reliability make it a popular choice among enthusiasts. However, its cost and potential complexity may be a deterrent for some. Ultimately, the decision to purchase this harness depends on your individual needs, budget, and level of electrical experience.

If you're serious about upgrading your LS-series engine to electronic fuel injection, the Holley EFI 558-134 LS2/3/7 58x/4x engine harness is a solid investment. Its ease of installation, compatibility with different engine configurations, and improvements in performance make it a worthwhile addition to your build. However, be prepared for the potential complexity of the EFI system and the cost of the harness. If you're unsure about your electrical experience or if this harness is the right fit for your project, consider consulting with a professional or doing thorough research before making a purchase.

part # 558134 prices

• $688.95-$704.09

specifications injectiopug:

• for models: Ls2
• brand: Holley Efi
• part type: Engine Harness
• manufacturer part number: 558-134
• upc: 090127140765

payments injectiopug:

• credit card: Diners-club
• other
• wallet: Paypal

shipping injectiopug:

• type: Fixed
• service: UPS Ground
• class: Standard
• transit: 2-6 Days
• carrier: UPS
• cost: $0.00

general injectiopug:

• Air Fuel Delivery > Fuel Injection Parts > Additional Fuel Injection Parts
• condition: New

seller injectiopug:

• # reviews: 14592
• rating: 98.7%

offer injectiopug:

• sold: 0
• availability: In Stock
• quantity: 7
• started: April 15, 2025
• options: Ship-to-home

returns injectiopug:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

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