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. Fits for 2006-2014 Acura TL / TL-S; 2006-2014 Acura TSX; 2010-2013 Acura ZDX; 2007-2015 Acura RDX; 2012-2015 Acura ILX; 2010-2013 Acura MDX; 2009-2011 Acura CSX; 2004-2015 Honda Odyssey; 2011-2013 Honda CR-Z; 2012-2014 Mazda CX-5; 2007-2012 Mazda CX-9; 2006-2009 Mazda 3; 2009-2014 Mazda 5; 2007-2016 Outlander; 2008-2015 Lancer Evolution. OEM Number: W3T13072,W3T15671,W3T20671 ,W3T20971,W3T16271,W3T13071,W3T15971,W3T18671,33119-TA0-003,33119-STK-A01,33119-SEP-H01,33119-SAA-013. 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.