Nissan I35 Altima Maxima Infiniti G35 QX4 M45 Xenon HID Ballast Computer Used Matsushita Xenon HID ballast control unit computer module tested in perfect working condition part #: HLB351D12-8 , 26055-VC000 Will fit: 2002-2003 Nissan Maxima / 2002-2006 Nissan Altima / 2003-2004 Infiniti G35 4 Door Sedan / 2003-2004 Infiniti M45 / 2002-2004 Infiniti I35 / 2001-2003 Infiniti QX4 ***PLEASE NOTE: There are two type ballasts for the QX4, please make sure this is the same one on your headlight, this one has a big connector, the other one has two smaller connectors.***