Chevrolet B60 Parking Light Bulb Size

The Chevrolet B60 parking light utilizes a 1157 bulb size for the lighting component. Available information covers the specific time period from 1980 through 1991 for the vehicle.

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
1980-1991	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 B60 uses the 1157 bulb for the parking light position across all listed model years from 1980-1991.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single glass envelope, allowing it to serve two distinct lighting functions at different wattages.
The bulb operates on a 12-volt electrical system and draws either 21 watts or 5 watts depending on which filament is active.
The 1157 uses a BAY15d bayonet base, which is an offset twin-pin mount. The two pins are positioned at different heights to ensure the bulb can only be inserted in one orientation, preventing incorrect filament activation.
The 1157 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning units sourced from either market share the same electrical and physical specifications.
Because the BAY15d base has offset pins, it is not interchangeable with single-filament bayonet bulbs that use a symmetrical twin-pin base, such as those with a BAY15s designation.