Replacement original ballast, straight swap over plug and play. Used to replace faulty Xenon HID Ballasts found under the headlamp itself. We have a large range of replacement lighting components, feel free to contact our technical team who are waiting. Compatible with the following vehicles and more: 2002-2005 Audi B6 A4 (with Bi-Xenon) 2004-2005 Audi S4 BMW 1 (E87) 116i Hatchback BMW 1 (E87) 118i Hatchback BMW 1 (E87) 120i Hatchback BMW 1 (E87) 118d Hatchback BMW 1 (E87) 120d Hatchback BMW 1 (E87) 130i Hatchback 2006-2008 VW Passat 2003-2006 Volvo S80 2004-2007 Volvo S60 2003-2007 Volvo XC90 (Please Check Before Purchasing) 2002-2007 Volvo V70 (Please Check Before Purchasing) Technical Spec: Input Voltage: 9-16V Max Input Current: 6.5A~8A Instant Start Voltage : ≥23KV Frequency: 250250±10Hz Output open circuit protection: ≤1S Output short circuit protection: ≤1S Input reverse voltage protection: ≤1S Operating Temperature: -40℃~105℃ Life: ≥3000HRS