HOLLEY EFI 558-211 Injector Harness Bosch Jetronic 090127688052 V8 Bosch/jetronic

( Brand: Holley Efi ), ( Part Type: Injector Harness ), ( Country Of Origin: Us ), ( UPC: 090127688052 ), ( Manufacturer Part Number: 558-211 )

Review HOLLEY EFI Gen V8 Injector Harness Bosch/jetronic And Injectors fits HEMI

The Holley EFI 558-211 Gen III HEMI V8 Injector Harness is a high-performance solution designed specifically for Bosch/Jetronic injected HEMI V8 engines. This harness is an essential component for any enthusiast looking to upgrade their HEMI engine with electronic fuel injection for improved performance and efficiency.

This harness comes with eight (8) injector connections, each capable of accommodating Bosch/Jetronic style injectors. The harness is engineered to provide a secure and reliable connection, ensuring optimal fuel delivery to the engine. It is designed to work seamlessly with Holley's EFI system, offering precise control over fuel delivery and engine management.

The Holley EFI 558-211 harness features a rugged and durable design, with heavy-duty wiring and connectors that can withstand the rigors of high-performance applications. Each connector is labeled clearly for easy identification and installation, ensuring a hassle-free experience. The harness also includes a wiring harness for the fuel pressure regulator, making it a complete solution for your HEMI EFI upgrade.

One of the key benefits of this harness is its ability to work in conjunction with Holley's EFI system to provide advanced features such as adjustable fuel pressure and temperature compensation. This allows for fine-tuning of the fuel delivery system to optimize performance and fuel efficiency, regardless of operating conditions.

The Holley EFI 558-211 Gen III HEMI V8 Injector Harness is a essential upgrade for any HEMI V8 engine looking to take advantage of the benefits of electronic fuel injection. With its reliable construction, easy installation, and advanced features, this harness is an excellent choice for enthusiasts looking to enhance the performance and efficiency of their HEMI engine.

Holley EFI 558-211 Gen Hemi V8 injector harness with Bosch/Jetronic injectors is a popular choice among automotive enthusiasts for upgrading their older Mopar engines to electronic fuel injection. Here are some pros and cons of using this harness:

1. Compatibility: This harness is specifically designed for Gen III Hemi engines (4.7L, 5.3L, 5.7L, and 6.1L) and is compatible with Bosch or Jetronic injectors.

2. Easy Installation: The harness comes pre-terminated, making it easier to install compared to other harnesses that require you to crimp and connect individual wires.

3. Improved Engine Performance: The use of electronic fuel injection can lead to improved engine performance, including better throttle response and increased power output.

4. Flexible Tuning: The harness is compatible with various tuning software, such as Holley's EFI Calibration Wizard and HP Tuners, allowing for easy and flexible tuning.

5. OEM-like Connectivity: The harness maintains OEM-like connectivity to important engine sensors, making it easier to integrate into the existing wiring harness.

1. Cost: The Holley EFI 558-211 harness with Bosch/Jetronic injectors can be more expensive compared to other aftermarket harness options, especially when factoring in the cost of the injectors themselves.

2. Limited Factory Settings: While the harness offers flexible tuning, some users have reported that it may not offer the same factory settings as the original Bosch or Jetronic systems, which could impact drivability or emissions compliance in some applications.

3. Customization: Depending on the specific application, some users may require customizations to the harness or wiring to ensure proper functionality.

4. Learning Curve: Installing and tuning an electronic fuel injection system can be a complex process, and this harness may require a significant learning curve for those unfamiliar with the technology.

The Holley EFI 558-211 Gen Hemi V8 injector harness with Bosch/Jetronic injectors can be an excellent choice for those looking to upgrade their older Mopar engines to electronic fuel injection. Its ease of installation, improved engine performance, and compatibility with various tuning software make it an attractive option. However, its cost, limited factory settings, and potential need for customization should be carefully considered before making a purchase. Ultimately, whether or not this harness is the right choice for you will depend on your specific application and tuning goals.

If you are looking to upgrade your older Mopar engine to electronic fuel injection, the Holley EFI 558-211 Gen Hemi V8 injector harness with Bosch/Jetronic injectors is definitely worth considering. However, before making a purchase, be sure to thoroughly research the harness and its compatibility with your specific application. Additionally, consider your budget, tuning goals, and willingness to learn the ins and outs of electronic fuel injection before making the investment. If you are unsure, it may be beneficial to consult with a professional automotive technician or tuning specialist to help guide you through the process.

part # 558211 prices

• $119.00-$191.95

specifications injectiopug:

• for models: Hemi
• brand: Holley Efi
• part type: Injector Harness
• country of origin: Us
• upc: 090127688052
• manufacturer part number: 558-211

seller injectiopug:

• # reviews: 11864
• rating: 99.6%

general injectiopug:

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

offer injectiopug:

• started: April 5, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 9

returns injectiopug:

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

shipping injectiopug:

• type: Fixed
• service: UPS Ground
• cost: $0.00
• transit: 3-6 Days
• class: Standard
• carrier: UPS

payments injectiopug:

• wallet: Apple-pay
• other
• credit card: Diners-club

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