HOLLEY EFI 558-116 Harness Tps Idle Air Control Connections 090127727454

( Brand: Holley Efi ), ( Part Type: Control Harness ), ( UPC: 090127727454 ), ( Manufacturer Part Number: 558-116 )

Review HOLLEY EFI Gen Main Harness Late Tps And Idle Air Control Connections fits HEMI

The Holley EFI 558-116 Gen III Hemi Harness is an essential component for any Gen III Hemi engine using Holley's Electronic Fuel Injection system. This high-performance harness is specifically designed to provide a secure and reliable connection for the Throttle Position Sensor (TPS) and Idle Air Control (IAC) on Gen III Hemi applications.

The TPS connection on this harness utilizes a three-wire design, including a signal wire, a ground wire, and a voltage reference wire. The TPS sensor is responsible for providing real-time engine RPM and throttle position information to the EFI system, allowing for optimal fuel delivery and engine performance. The included TPS sensor is a high-quality, OEM-style unit that offers precise and accurate readings.

The Idle Air Control (IAC) connection on the Holley EFI 558-116 harness is equally important for maintaining stable engine idle and improving cold start performance. The harness includes a four-wire IAC connector, with one signal wire, one ground wire, and two 12V power wires. The IAC valve, which is controlled by the EFI system, regulates the amount of air entering the engine during idle to maintain consistent engine RPM and idle quality.

The Holley EFI 558-116 Gen III Hemi Harness is manufactured with high-quality materials and features secure, locking connectors to ensure a reliable electrical connection. The harness is also fully labeled, making it easy to identify each wire and its corresponding function.

Installation of the Holley EFI 558-116 harness is straightforward and can be accomplished in a few simple steps. The harness is designed to plug directly into the Holley EFI system, making it a direct replacement for the factory wiring harness. The included instructions provide a clear and detailed guide for installation, ensuring a hassle-free experience for the user.

In summary, the Holley EFI 558-116 Gen III Hemi Harness is an essential accessory for any Gen III Hemi engine using Holley's Electronic Fuel Injection system. It offers a secure and reliable connection for the TPS and IAC, ensuring optimal engine performance and idle stability. The harness is manufactured with high-quality materials and features easy-to-use, locking connectors for added durability and reliability.

The Holley EFI 558-116 Gen Hemi harness is a wiring solution designed to simplify the installation process of Holley EFI systems on Chrysler 5.7L and 6.1L HEMI engines. This harness includes connections for the TPS (Throttle Position Sensor) and IAC (Idle Air Control). Here are some potential pros and cons that may help in deciding whether to purchase this harness:

1. Simplifies the wiring process: Pre-made harnesses can save time and effort compared to creating custom wiring solutions.

2. OEM-style connectors: The harness uses OEM-style connectors, making it easier to install and ensuring a secure connection.

3. Eliminates the need for additional adapters or connectors.

4. Improved reliability: Pre-made harnesses are less prone to wiring errors and can help ensure proper system operation.

1. Cost: Pre-made harnesses can be more expensive than creating custom wiring solutions.

2. Limited flexibility: Since the harness is designed for specific applications, it may not offer the same level of flexibility as custom wiring.

3. Availability: Depending on the specific make and model of your vehicle, the harness may not be readily available or may require a longer lead time for shipping.

In conclusion, the Holley EFI 558-116 Gen Hemi harness can save time and effort during installation while ensuring a secure connection. However, it may be more expensive than creating custom wiring solutions and may not offer the same level of flexibility. Ultimately, the decision to purchase this harness depends on your specific needs, budget, and availability.

If you're installing a Holley EFI system on a Chrysler 5.7L or 6.1L HEMI engine and value the convenience and reliability of a pre-made harness, the Holley EFI 558-116 Gen Hemi harness is a worthwhile investment. However, if you're on a tight budget or require a high level of flexibility, it may be worth considering custom wiring solutions instead.

part # 558116 prices

• $819.95-$854.82

specifications injectiopug:

• for models: Hemi
• brand: Holley Efi
• part type: Control Harness
• upc: 090127727454
• manufacturer part number: 558-116

general injectiopug:

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

returns injectiopug:

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

shipping injectiopug:

• cost: $0.00
• service: UPS Ground
• transit: 4-7 Days
• carrier: UPS
• class: Standard
• type: Fixed

seller injectiopug:

• # reviews: 19167
• rating: 99.5%

offer injectiopug:

• quantity: 7
• availability: In Stock
• options: Ship-to-home
• started: February 7, 2026
• sold: 0

payments injectiopug:

• wallet: Apple-pay
• credit card: Visa
• other

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