Oldsmobile Aurora front fog light bulbs use 880 or 893 size, while rear fog light bulbs use 921 size. The replacement chart covers 1995 to 2003 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Oldsmobile Aurora uses two distinct front fog light bulb types across its production years: the 880 for 2001-2003 models and the 893 for 1995-1999 models. These two bulbs are not interchangeable due to differences in base type, wattage, and physical construction.
The 880 bulb is a single-filament halogen unit operating at 12V and 27W, fitted with a PG13 base. It meets ANSI standards applicable in both the US and Canada.
The 893 bulb is also a single-filament halogen type but draws more power at 37.5W on a 12V circuit. It uses a PGJ19 base, which is physically incompatible with the PG13 socket used by the 880.
The PG13 and PGJ19 base designations refer to proprietary projector-style bases used in fog light applications. The differing base designs prevent accidental cross-installation between the 880 and 893 bulbs.
The higher wattage of the 893 (37.5W versus 27W) means it produces more heat and draws more current than the 880. Using a replacement bulb with a different wattage rating than specified could affect the electrical circuit and housing performance.
The Oldsmobile Aurora (2001-2003) is equipped with a rear fog light, which uses the 921 bulb. Earlier Aurora model years do not carry a rear fog light specification.
The 921 is a T15 wedge-type bulb rated at 12V and 16W. Unlike the halogen fog light bulbs used at the front, the 921 is a standard incandescent wedge unit without a specialized base, making it a widely available replacement type.
The T15 wedge form factor of the 921 bulb is common across many automotive rear lighting applications, which reflects its broad compatibility outside of this specific fitment context.
All three bulb types listed (880, 893, and 921) conform to ANSI standards recognized in both the US and Canada, indicating standardized electrical and photometric performance requirements for each type.
The front fog light bulb transition from the 893 to the 880 between the 1999 and 2001 Aurora model years represents a reduction in wattage from 37.5W to 27W, along with a change in base type from PGJ19 to PG13.