1、Compatibility – Compatible with 1996-2003 Freightliner Columbia, fit for 2004 Freightliner Columbia (Built Before 3/31/04 Production Date). High Beam:9005 12V 65W, Low Beam:9006 12V 55W. 4、Sturdy Sealing Structure – The fully sealed heavy-duty housing is made of high-quality plastic,to ensure excellent weather resistance, impact resistance, and durability.