Freightliner Argosy Headlight Bulb Size

Additional Notes

• The Freightliner Argosy uses the 9008 bulb type for both high beam and low beam headlights across the 2005-2007 model years.
• The 9008 bulb, also known as H13, is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments to serve both the high beam and low beam functions within one housing.
• Because the 9008 handles both beam functions, the Argosy does not require separate bulb types for high and low beam operation.
• The 9008/H13 bulb operates at 12 volts and produces approximately 65 watts on high beam and 55 watts on low beam, which are standard output levels for this bulb type.
• The dual-filament design of the 9008 means that a failure of one filament results in the loss of only one beam mode, while the other remains functional.
• The 9008 bulb uses a specific three-pronged connector and is not interchangeable with single-filament bulb types such as 9005 or 9006, despite those bulbs being physically similar in some respects.
• Substituting a 9005 or 9006 bulb in place of a 9008 would result in the loss of one beam function, as those bulbs carry only a single filament.