Dorman 601-056 High Intensity Discharge (HID) Lighting Ballast

Dorman 601-056 HID Ballast for OE-Style Headlight Repair

This Dorman HID lighting ballast restores proper headlight function on vehicles equipped with high-intensity discharge lighting. Built to match original fit and performance, it is a direct replacement for failed ballast units that can leave HID headlights dim, flickering, or inoperative.

• OE-style replacement for HID headlight systems
• Complete control module replacement type
• Aluminum housing with silver finish
• Pin terminal design with 1 connector and 5 terminals
• Compact body dimensions: 4 in. long, 3 in. wide, 1 in. thick
• Wiring harness not included
• Package contents: 1 high intensity discharge igniter

Detailed Product Information

The Dorman 601-056 is a high intensity discharge lighting ballast designed for vehicles that use D1S HID bulbs and factory-style ballast control. It is built to restore headlight operation by replacing the original ballast module with a unit that matches the required fit and electrical function. This part number is commonly searched for BMW 530i, BMW X5, Cadillac Escalade, and Mercedes-Benz Sprinter HID headlight repair applications.

Use Dorman 601-056 when servicing HID systems on select Cadillac Escalade and Escalade ESV models, BMW 5 Series and X5 applications, Mercedes-Benz G-Class and Sprinter vans, Hyundai Genesis and Sonata, Volkswagen Touareg and Tiguan, and other listed vehicles. This part cross-references 6H6Z13C170A and 921903L000 for the same application.

Common Problems This Part Can Help Resolve

• One headlight not turning on
• Flickering HID headlight output
• Intermittent low-beam operation
• Ballast-related warning lights or headlight faults
• Loss of proper HID ignition on D1S-equipped vehicles

Installation Notes and Tips

Verify the original ballast connector style, terminal count, and bulb type before installation. This unit uses a 1-connector, 5-terminal pin configuration and is listed for vehicles with HID systems using D1S bulbs in many applications. Confirm the vehicle-specific notes for Mercedes-Benz Sprinter and BMW X5/X6 fitment before ordering. Professional installation is recommended when diagnosing headlight electrical faults.

Quality Assurance

Dorman designs this ballast as a direct-fit replacement to match original equipment function and restore proper HID headlight performance on specified vehicles.