<b>Description: </b><br/>Shellmaterial: Aluminum<br/>Bulb Type: High Intensity Discharge <br/>Interchange Part : 28474-89915,28474-8991A,28474-8991B,28474-8992A<br/><br/><b>How to Diagnosing a Bad Ballast! </b><br/><b>Step 1:Remove the Headlight Bulbs! </b><br/>If you just noticed that your headlight is out, open your hood and access the headlight bulb through the access port in the back .<br/><b>Step 2: Check the headlight bulb!</b><br/>Remove the headlight bulb and check for any discoloration or cracking. If there is no discoloration, switch the two headlight bulbs from one headlight to the other. If the bulb is not lit, the bulb is broken. If the bulb is lit, the ballast is broken. You need to change the ballast.<br/><br/><b>This Control Unit Assembly Module Fits the Following Vehicles:</b><br/>2008-2012 For Infiniti EX35 Base Sport Utility 4-Door<br/>2008-2012 For Infiniti EX35 Journey Sport Utility 4-Door<br/>2013-2013 For Infiniti EX37 Base Sport Utility 4-Door<br/>2013-2013 For Infiniti EX37 Journey Sport Utility 4-Door<br/>2009-2013 For Infiniti G37 Journey Sedan 4-Door<br/>2012-2012 For Infiniti G37 Premier Convertible 2-Door<br/>2009-2013 For Infiniti G37 Sport Convertible 2-Door<br/>2006-2010 For Infiniti M45 Sport Sedan 4-Door<br/>2010-2014 For Mazda 3 I Touring Sedan 4-Door<br/>2010-2013 For Mazda 3 For Mazdaspeed Hatchback 4-Door<br/>2010-2014 For Mazda 3 S Hatchback 4-Door<br/>2010-2014 For Mazda 3 S Sedan 4-Door<br/>2010-2014 For Mazda 3 Sport GS Hatchback 4-Door<br/>2012-2013 For Mazda 3 Sport GS-SKY Hatchback 4-Door<br/><br/>