International 4400 high beam and low beam headlight bulbs use 9007 size. The replacement chart covers 2011 to 2018 vehicle production years with bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The International 4400 uses the 9007 bulb size for both high beam and low beam headlights across the 2011-2018 model years.
The 9007 is a dual-filament bulb, meaning a single unit contains separate filaments for high and low beam functions, which accounts for its use in both headlight positions on this vehicle.
Because the 9007 serves both beam functions, the high beam and low beam headlight positions on the International 4400 are not served by separate, dedicated bulb types.
The 9007 bulb operates on a two-filament design where the high beam filament typically produces around 65 watts and the low beam filament around 55 watts, resulting in differing light output between the two modes despite sharing a single housing.
The 9007 uses a specific asymmetric connector configuration that is not interchangeable with the physically similar 9004 bulb, as the two types have different pin orientations to prevent incorrect installation.
Substituting a 9004 for a 9007, or vice versa, would result in reversed beam functions, with the high beam filament activating in low beam mode and the low beam filament activating in high beam mode.
The 9007 bulb base is of the P29t type, a designation that refers to the physical base and contact configuration standardized across manufacturers producing this bulb size.
Aftermarket versions of the 9007 are produced in halogen, HID conversion, and LED formats, though the original specification for this fitment is a halogen type.