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

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

Brand Dorman 601-174
Body Color Silver
Body Length 4.4
Body Material Aluminum
Body Thickness 0.8
Body Width 3.9
Connector Quantity 2
Electronic Component Replacement Type Complete Control Module
Installation Hardware Included No
Package Contents 1 High Intensity Discharge Lighting Ballast
Terminal Quantity 9
Terminal Type Blade
Wire Quantity 0
Wiring Harness Included No
Fits Audi · 20 vehicles

OE direct replacement. Matches the fit and performance of the original HID ballast.

Complete control module. Restores proper headlight function with a direct electronic replacement.

Aluminum housing. Durable construction helps protect the ballast's internal electronics.

Cross-references 8K0907472A and R66039 for the same application. See all 2.

$241.01Free shipping
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Step 2 — Quantity
Order total $241.01
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all High Intensity Discharge (HID) Lighting Ballast options

Dorman 601-174 HID Ballast for Audi Lighting Repair

Dorman 601-174 is a high-intensity discharge lighting ballast built to match the fit and performance of the original unit on specified Audi vehicles. It restores proper headlight operation when the factory HID ballast fails, helping return the lighting system to normal function.

Key Features

  • Complete control module replacement for HID headlight systems
  • Aluminum body with silver finish
  • Blade terminal design with 2 connectors and 9 terminals
  • Compact housing dimensions: 4.4 in. long, 3.9 in. wide, 0.8 in. thick
  • Direct-fit replacement for Audi HID lighting applications
  • Part number 601-174 for service matching and lookup

Detailed Description

This Dorman HID ballast is engineered for vehicles equipped with LED lights and a 9-pin connector, including 2009-2012 Audi A4, 2009-2012 Audi A4 Quattro, 2009-2012 Audi S4, 2013-2016 Audi A4 allroad, and 2013-2016 Audi allroad. It is designed as a complete control module replacement to restore headlight function when the original ballast no longer operates correctly. The aluminum housing supports a durable OE-style layout, and the connector and terminal configuration are built to match the original electrical interface. This part cross-references Audi 8K0907472A and R66039 for the same application.

Common Problems It Can Help Solve

  • One headlight not turning on
  • Intermittent HID headlight operation
  • Ballast-related headlight flicker
  • Loss of low-beam output on HID-equipped Audi models
  • Electrical failure at the original ballast connection

Installation Notes and Tips

Verify the vehicle uses LED lights and a 9-pin connector before installation. Confirm connector count, terminal layout, and mounting location against the original unit. The ballast is supplied without a wiring harness or installation hardware, so reuse the existing vehicle connections and mounting points where applicable. Always compare the original part number and connector style to Dorman 601-174 before replacement.

Quality Assurance

Dorman designs this HID lighting ballast to match original fit and performance for specified applications. It is intended as a direct replacement for factory-style headlight control module service on the listed Audi models.

Related reading

This part fits 20 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2016AudiA4 allroadN/Aw/LED Lights; w/9 Pin Connector
2016AudiallroadN/Aw/LED Lights; w/9 Pin Connector
2015AudiA4 allroadN/Aw/LED Lights; w/9 Pin Connector
2015AudiallroadN/Aw/LED Lights; w/9 Pin Connector
2014AudiA4 allroadN/Aw/LED Lights; w/9 Pin Connector
2014AudiallroadN/Aw/LED Lights; w/9 Pin Connector
2013AudiA4 allroadN/Aw/LED Lights; w/9 Pin Connector
2013AudiallroadN/Aw/LED Lights; w/9 Pin Connector
2012AudiA4N/Aw/LED Lights; w/9 Pin Connector
2012AudiA4 QuattroN/Aw/LED Lights; w/9 Pin Connector
2012AudiS4N/Aw/LED Lights; w/9 Pin Connector
2011AudiA4N/Aw/LED Lights; w/9 Pin Connector
2011AudiA4 QuattroN/Aw/LED Lights; w/9 Pin Connector
2011AudiS4N/Aw/LED Lights; w/9 Pin Connector
2010AudiA4N/Aw/LED Lights; w/9 Pin Connector
2010AudiA4 QuattroN/Aw/LED Lights; w/9 Pin Connector
2010AudiS4N/Aw/LED Lights; w/9 Pin Connector
2009AudiA4N/Aw/LED Lights; w/9 Pin Connector
2009AudiA4 QuattroN/Aw/LED Lights; w/9 Pin Connector
2009AudiS4N/Aw/LED Lights; w/9 Pin Connector
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
8K0907472AR66039