8K0.941.597 E Xenon HID Headlight Ballast Control Unit – Compatible with Audi & VW (D3S/D4S, 35W)

Ensure reliable and consistent headlight performance with this high-quality Xenon HID Headlight Ballast Control Unit, designed for a wide range of Audi and Volkswagen vehicles. This ballast is engineered to provide stable power delivery, fast ignition, and long operational life for OEM Xenon HID systems.

Supporting D3S, D3R, D4S, and D4R bulbs, this unit is a direct plug-and-play replacement for faulty or aging factory-installed ballasts. Built to withstand extreme temperatures and voltage fluctuations, it delivers dependable performance in daily driving and long-distance conditions.

Ideal for restoring original lighting output, this ballast offers OEM-level compatibility, advanced circuit protection, and durable construction. It is suitable for non-HG Xenon bulbs and is recommended to be used with genuine 35W Xenon lamps for optimal longevity and safety.

Perfect for workshops, repair centers, and individual replacements, this Xenon ballast helps maintain clear visibility and factory lighting standards.

⚙️ Key Features

• Supports D3S / D3R / D4S / D4R Xenon HID bulbs

• OEM-compatible replacement (Plug & Play)

• Stable output with fast ignition

• Built-in protection against short circuit, reverse polarity & open load

• Designed for harsh automotive environments

• Suitable for Audi & Volkswagen Xenon systems

• Long service life (up to 3000+ hours)
  

  
  

  Parameter	Specification
  Input Voltage	9V – 16V DC
  Output Power	35W
  Start Voltage	≥ 23KV
  Operating Frequency	~250Hz
  Operating Temperature	-40°C to +105°C
  Protection	Short circuit, open circuit, reverse polarity
  Bulb Compatibility	D3S, D3R, D4S, D4R
  Installation	Plug & Play

  🚗 Vehicle Compatibility (Common Models)

  Audi

  • A3 / S3

  • A4 / S4 / RS4 (B8)

  • A5 / S5 / RS5

  • A6 / S6 / RS6

  • A7 / S7 / RS7

  • A8 / S8

  • Q3 / Q5 / Q7

  Volkswagen

  • Golf / GTI

  • Jetta

  • Passat

  • Tiguan

  • Touareg

  • Polo

  • CC

  • Sharan

  ⚠️ Compatibility may vary by year and region. Always confirm part number before ordering.

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  🔢 OEM & Replacement Part Numbers

  Primary Reference

  • 8K0 941 597 E

  • 8K0941597E

  • W003T22071

  Also Replaces

  • 8K0 941 597 C

  • 8K0 941 597 D

  • 8K0941597

  • 1307329315

  • W3T21071