Land Rover Defender 90 high beam and low beam headlight bulbs both utilize the H6024 size. The replacement chart covers vehicle production spanning 1994 to 1997.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The H6024 is the sole bulb type across all listed years and positions in the Land Rover Defender 90 headlight specifications, covering both high beam and low beam functions for the 1994-1997 model years.
The H6024 is a 7-inch round sealed beam unit operating at 12 volts, conforming to ANSI standards applicable in the United States and Canada.
A sealed beam unit integrates the filament, reflector, and lens into a single fused assembly, which means the entire unit is replaced rather than an individual bulb.
Because the H6024 serves both the high beam and low beam positions in the Defender 90, a single sealed beam unit contains dual filaments, each dedicated to one of the two functions.
The ANSI standardization of the H6024 means the unit conforms to a fixed physical and electrical specification, allowing fitment of units from multiple manufacturers provided they carry the same designation.
Substituting a non-sealed-beam or projector-style housing assembly in place of the H6024 would require modifications beyond a direct replacement, as the vehicle was designed around the sealed beam format.