International LoneStar high beam headlight bulbs use 9005XS size while low beam headlight bulbs use 9006XS size. The replacement chart covers vehicle production years spanning 2009 to 2017 with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The International LoneStar uses the 9005XS for the high beam headlight position across all model years from 2009-2017.
The 9005XS is a short-base variant of the standard 9005 bulb. The "XS" designation indicates a reduced base length, which is required in housings with limited clearance behind the headlight assembly.
Substituting a standard 9005 in place of a 9005XS is not recommended, as the longer base of the standard bulb can prevent proper seating or cause interference with the housing.
The low beam headlight position on the International LoneStar calls for the 9006XS across all model years from 2009-2017.
The 9006XS follows the same short-base principle as the 9005XS. The 9006 family produces a lower output than the 9005 family, which is consistent with its role in a low beam application where a controlled, downward-directed light pattern is required.
Although the 9005XS and 9006XS share a similar physical profile, they use different base configurations and are not interchangeable with each other. Installing a high beam bulb in a low beam socket, or vice versa, would result in an improper fit and incorrect light output.
Both the 9005XS and 9006XS are single-filament halogen bulbs, meaning each position in the headlight system requires its own dedicated bulb rather than a dual-filament unit handling both functions.