8K0941597E Xenon Ballast W003T22071 - Audi A3 A4 A5 A6 Q5 VW (Aftermarket)

Replacement Xenon Headlight Ballast 8K0941597E - D3S D4S HID Control Unit (Aftermarket)

VW / Audi Part Number: 8K0941597E

Mitsubishi OE Reference: W003T22071

This aftermarket xenon ballast is a cost-effective replacement for the original Mitsubishi unit, designed to restore proper operation of factory D3S and D4S HID headlight systems.

It is manufactured to match the performance and fitment of the original unit, offering a reliable solution at a lower price point.

Common Fault Symptoms

• Headlight not turning on
• Light flickering or intermittent
• Headlight turns on then switches off
• One headlight not working

These are typical signs of a failing xenon ballast. Replacing the ballast will often restore normal headlight operation.

Not sure if it’s the bulb or ballast? View our Headlight Faults & Help guide.

Key Features

• Direct replacement for 8K0941597E
• Compatible with D3S / D4S xenon systems
• Plug and play installation
• Fits left or right side
• Cost-effective alternative to OEM

Known Fitment

Audi / Volkswagen Models:

• A1: 2011-2015
• A3: 2009-2013
• S3: 2009-2014
• RS3: 2011-2013
• A4: 2008-2015
• S4: 2010-2014
• RS4: 2013-2016
• A5: 2008-2014
• S5: 2008-2014
• RS5: 2010-2016
• A6: 2011-2015
• S6: 2009-2014
• RS6: 2013-2015
• A7: 2011-2014
• S7: 2010-2014
• RS7: 2014-2015
• A8 / S8 / A8L: 2010-2015
• Q3: 2012-2014
• RS Q3: 2014-2015
• Q5: 2009-2012
• VW Caddy: 2011-2015
• VW CC: 2012-2015
• VW Sharan: 2011
• Golf VII: 2013-2015
• Passat B7: 2013-2015
• Passat CC: 2012-2014
• Jetta VI: 2011-2015
• Polo 6R: 2010-2012
• Tiguan: 2013-2015
• Touareg: 2011-2015
• Touran: 2012-2015

Important: Always match your original part number before ordering.

Compatible Part Numbers

OEM References:

• 8K0941597E
• W003T22071
• W003T20171
• W3T21071
• W3T16372
• W3T11472

Other Manufacturer References:

• 8K0 941 597
• 8K0 941 597E
• 8K0 941 597C
• AL 1 307 329 315
• AL 1 307 329 320
• AL 1 307 329 269

OEM vs Aftermarket Option

This is an aftermarket replacement unit. If you prefer original manufacturer quality, you can view the genuine version here:

View Genuine Mitsubishi OEM Ballast

Warranty & Support

Supplied with a 12-month warranty from HIDS-DIRECT.

If you are unsure about compatibility, feel free to contact us with your vehicle details or a photo of your existing unit.