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. AL Part Numbers: 1 307 329 312 01 130732931201 10EEG110011 Mercedes Part Numbers: A1669002800 A166 900 28 00 166-900-28-00 172-901-54-00 A1729015400 Compatible with the following vehicles and more: 2012-2014 Mercedes C Class 2012-2014 Mercedes ML, GL Class 2013-2014 Mercedes SL, SLK Class 2012-2014 Mercedes Benz ML250, ML350, ML450, ML550, ML63 AMG, ML Diesel BlueTec, ML 4Matic 2011-2014 BMW 328i 335i 335is E93 1959-2000 Mini 1996-2009 Mercedes AVANTGARDE 2004-2014 Mercedes VITO 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