Hino 338CT high beam and low beam headlight bulbs both utilize a 9003 bulb size. The replacement chart covers vehicle production spanning 2008 to 2014.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Hino 338CT uses the 9003 bulb for both high beam and low beam headlights across all model years from 2008-2014.
The 9003 is an ANSI-standard bulb recognized in the United States and Canada, operating on a 12-volt electrical system with a dual-filament halogen design rated at 60 watts for high beam and 55 watts for low beam.
The dual-filament construction of the 9003 allows a single bulb to serve both high and low beam functions within one housing, which accounts for its use in both headlight positions on the 338CT.
The 9003 bulb uses a P43t base, a bayonet-style mount with a 43mm collar, which physically determines socket compatibility and is not interchangeable with single-filament bases such as those found on H1 or H7 bulbs.
Because the same bulb type fills both beam positions, a single replacement part covers all headlight fitment needs for the 2008-2014 model year range.