The Pontiac Phoenix high beam and low beam headlight bulbs both utilize the H6054 size. Replacement bulb specifications for the Phoenix span from 1977 to 1984 in the chart.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Pontiac Phoenix uses the H6054 bulb size for both high beam and low beam headlights across all listed model years, spanning 1977-1984.
The H6054 is an ANSI-standard sealed beam unit recognized in both the United States and Canada, operating at 12 volts.
The H6054 is a 5x7-inch rectangular sealed beam unit, meaning the entire assembly is replaced rather than an internal filament or capsule.
Because the H6054 functions as a sealed beam, the lens, reflector, and filament are fused into a single unit, and no component-level bulb replacement is possible.
The identical H6054 specification for both high beam and low beam positions across the Pontiac Phoenix indicates the vehicle uses a dual-function sealed beam arrangement in each housing rather than separate single-function units.
The H6054 designation follows ANSI standardization, which means units from different manufacturers sharing this designation are built to the same physical and electrical specifications, allowing interchangeability between compliant products.