The Toyota MR2 uses the H6054 bulb size for both high beam and low beam headlights across all listed model years from 1985-1995, with the exception of 1990, which does not appear in the specifications.
The H6054 is an ANSI-standardized sealed beam unit recognized in both the United States and Canada, operating at 12 volts.
The H6054 follows a 5x7-inch rectangular form factor, which is a widely used sealed beam format shared across many vehicle makes and models of that era, contributing to broad parts availability.
As a sealed beam unit, the H6054 houses the filament, reflector, and lens as a single fused assembly. When the filament fails, the entire unit requires replacement rather than just an internal bulb.
The Toyota MR2 uses the same H6054 unit for both high and low beam functions, meaning the vehicle does not use separate bulb types or separate housings to distinguish between the two beam modes.
Because the H6054 is an ANSI-standardized sealed beam, replacement units from various manufacturers are generally cross-compatible by form factor, provided they conform to the H6054 specification.