Chevrolet B7 Parking Light Bulb Size

The Chevrolet B7 parking light requires a single 1157 bulb size for the specific lighting component located on the exterior of the vehicle. Data for the bulb size covers the range from 1993 through 2002.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1993-2002	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

Other Locations

Additional Notes

The Chevrolet B7 uses the 1157 bulb for the parking light position across all listed model years, spanning 1993-2002.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single glass envelope, each operating at a different wattage.
The 1157 operates at 12 volts with a wattage rating of 21W on the primary filament and 5W on the secondary filament, reflecting its dual-function design.
The 1157 uses a BAY15d bayonet base, which features two offset pins at different heights on the base to prevent incorrect insertion of a single-filament substitute.
The 1157 conforms to ANSI standards and is recognized in both the United States and Canada, placing it within a widely distributed specification category.
Because the BAY15d base is pin-offset, a single-filament 1156 bulb, which shares a similar bayonet form but uses a BAU15s or BA15s base with equal-height pins, is not a compatible replacement for the Chevrolet B7 parking light position.