558-402 HOLLEY Harness

Review HOLLEY Auxiliary Harness

The Holley 558-402 Fuel System Electric Fuel Pump Wiring Harness is a high-quality and essential component for any automotive application that requires an electric fuel pump. This wiring harness is specifically designed to work with Holley 112, 115, 118, and 122 series electric fuel pumps, making it a versatile option for various vehicle setups.

The 558-402 harness is meticulously constructed with top-tier materials, ensuring durability and reliability. Each wire is insulated with heat-resistant and oil-resistant materials, providing protection against potential damage caused by high temperatures or fuel exposure. These wires also feature a Teflon outer coating, which enhances their flexibility and makes them resistant to abrasion and wear.

This harness comes with an array of convenient features that simplify the installation process. One such feature is the use of quick-connect terminals, allowing for easy and secure connections to the fuel pump and other components. Additionally, the harness includes a fuel level sender wire, which enables the vehicle's fuel gauge to function properly.

Another notable aspect of the Holley 558-402 harness is its compatibility with various fuel systems, including EFI, carbureted, and even older model vehicles. It also supports both 6-volt and 12-volt systems, making it a versatile solution for a wide range of applications.

Installing the 558-402 harness is a straightforward process that can be completed in a relatively short amount of time. The harness includes clear and concise instructions, as well as helpful diagrams to guide users through the installation process. With its plug-and-play design, users can feel confident that they are making secure and accurate connections, ensuring a smooth and hassle-free installation experience.

In summary, the Holley 558-402 Fuel System Electric Fuel Pump Wiring Harness is an essential accessory for any automotive application that requires an electric fuel pump. Its high-quality construction, versatile compatibility, and user-friendly design make it a top choice for automotive enthusiasts and professionals alike. With its quick and easy installation process, users can trust that their electric fuel pump system will function reliably and efficiently, enhancing their overall driving experience.

The Holley 558-402 harness is a popular choice for those looking to upgrade their electrical system in their hot rod or classic car. This harness is specifically designed for Holley carburetor applications and comes with several advantages and disadvantages.

1. Designed for Holley Carburetors: The harness is engineered to work seamlessly with Holley carburetors, ensuring a proper electrical connection and reliable operation.

2. Improved Performance: A high-quality wiring harness can help improve engine performance by ensuring a stable electrical supply to all components.

3. Better Appearance: The harness features a vintage-style appearance, which can enhance the overall look of your hot rod or classic car.

4. Easy Installation: The harness includes clear instructions and is designed to be easy to install, even for those without extensive electrical knowledge.

5. Durability: The harness is constructed using heavy-duty, high-temp wiring, making it more resilient to wear and tear than stock wiring.

1. Cost: The Holley 558-402 harness is more expensive than stock wiring, which may be a deterrent for some.

2. Additional Time: Installing a new wiring harness can take longer than a standard wiring job, especially for those who are not experienced with electrical work.

3. Customization: Depending on your specific application, you may need to modify the harness to fit your car or engine, which may require additional time and resources.

The Holley 558-402 harness is an excellent investment for those seeking improved performance, reliability, and vintage style in their hot rod or classic car. While it comes with a higher cost and may require additional time for installation, the benefits far outweigh the drawbacks.

If you are looking to upgrade your electrical system and are confident in your ability to install the harness, or if you have the resources to hire a professional, the Holley 558-402 harness is a worthwhile investment. It will provide you with a reliable and stylish electrical system that can help enhance the performance and appearance of your hot rod or classic car.

Details:

Holley being an undeniable leader in fuel systems for over 100 years, offers a wide range of performance carburetors, pumps, intake manifolds and engine dress up products street performance, race, marine applications. Quantity: kit.. Fuel injection type: efi.

Holley 558-402 - auxiliary harness. Terminated: no. Harness purpose: auxiliary. Holley carburetors have powered almost every NRA pro stock champion and NASCAR sprint cup team for 40 years.

specifications ignitioncomp:

• brand: Holley
• mpn: 558-402
• part type: Harness
• country/region of manufacture: Us
• upc: 090127666432

shipping ignitioncomp:

• type: fixed
• transit: 2-5 days
• service: standard
• class: standard

seller ignitioncomp:

• rating: 97.4%
• city: saint paul, minnesota
• # reviews: 45047

payments ignitioncomp:

• credit card: discover
• wallet: apple-pay
• other

offer ignitioncomp:

• options: ship-to-home
• sold #: 16
• started: july 16, 2025
• price: $179.95
• item condition: New
• in stock #: 5
• availability: in stock

general ignitioncomp:

• category: Auto Parts > Car Truck Accessories > Ignition Systems Components

returns ignitioncomp:

• policy: returns accepted
• paid by: seller
• time: 30 days