Dave, the headlamp at the top of the picture has a manufacture date in 2003, the one at the bottom of the picture has a manufacture date in 2006. The 2003 headlamp has the white vent tube and solid rubber caps, no TSB kit. The 2006 headlamp has been redesigned, no white vent tube but it now has the rectangular vent on the housing that the TSB kit provides with the replacement rubber cap.