Dorman 601-174 High Intensity Discharge (HID) Lighting Ballast

Reliable HID Lighting Ballast for Audi A4 and S4 Models

The Dorman 601-174 High Intensity Discharge (HID) Lighting Ballast is designed to restore proper function to the exterior lighting system of select Audi vehicles. Engineered with a durable aluminum body and precise electrical specifications, this ballast ensures consistent performance for Audi A4, A4 allroad, A4 Quattro, allroad, and S4 models.

Key Features of the Dorman 601-174 HID Ballast

• Body color: Silver aluminum housing for corrosion resistance
• Blade terminal type with 9 terminals for secure electrical connections
• Includes 2 connectors for seamless integration
• Compact dimensions: 4.4 inches length, 3.9 inches width, 0.8 inches thickness
• Complete control module electronic component replacement
• Does not include wiring harness or installation hardware
• Package contains one high intensity discharge lighting ballast

Detailed Product Description

The Dorman 601-174 HID Lighting Ballast features a robust aluminum body that provides durability and heat dissipation essential for high-intensity discharge lighting systems. Its silver finish complements the vehicle’s engine bay while resisting corrosion. The ballast is designed with blade-type terminals and multiple connectors to ensure reliable electrical contact and compatibility with the factory wiring harness of Audi A4 and S4 models. This complete control module replacement is engineered to meet or exceed OEM specifications, providing consistent voltage regulation and ignition for HID headlights.

Common Applications and Issues Addressed

• Restores flickering or dim HID headlights on Audi A4 and S4 vehicles
• Replaces faulty or damaged HID ballasts causing headlight failure
• Solves intermittent lighting issues related to ballast malfunction
• Improves headlight startup time and brightness consistency
• Addresses electrical faults in the exterior lighting system

Installation Notes and Tips

• Compatible with Audi A4, A4 allroad, A4 Quattro, allroad, and S4 models
• Installation requires removal of the existing ballast and connection to factory wiring harness
• Wiring harness and installation hardware are not included; reuse existing components
• Ensure all electrical connections are secure and terminals are clean before installation
• Professional installation is recommended to avoid damage to the lighting system

Quality Assurance and Warranty Information

Dorman manufactures the 601-174 HID Lighting Ballast to meet stringent quality standards, using durable aluminum housing and reliable electronic components. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship. This ballast is designed to provide consistent performance and longevity when installed according to manufacturer guidelines.