O-NEX Xenon D1S D2S 35W HID Ballast W003T20071 Factory OEM Direct Replacement Control Unit Module for BMW 1 2 3 5 7 Series X1 Z4

Pack of 1 piece OEM design factory direct replacement HID Ballast control module unit; the replacement ballast is not OEM but is fully Plug-and-Play and will be direct replacement of your factory unit. Compatible Replacement for 2009-2012 BMW X1, 2009-2012 Z4, 2009-2012 3 Series Sedan, 2009-2012 7 Series, K48 Motorcycle, For 2009-2012 Rolls-Royce. OEM Number: 63117237647, 7237647, for Mitsubishi W003T20071, W003T23171 Please verify your factory ballast and connectors matches the product on the image exactly before placing an order. Certain manufacturers may change the ballast type when there is a mid-cycle refresh or new production date. Please note that the most common reason for failure is water in the headlight. If you headlight has water in and your ballast has failed because of it, you may need a new headlight as a replacment ballast will fail again.