Chevrolet Brookwood Engine Compartment Light Bulb Size

Chevrolet Brookwood engine compartment light bulb sizes include 1003, 1156, and 94 configurations across different production specifications. The replacement chart covers 1958 to 1972 model years with corresponding bulb size data.

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

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
1972	1003	1003	Check Price
1969-1970	1156	P21W	Check Price
1958-1961	94	94	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1003	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156	Check Price
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W	Check Price
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	94	Check Price

Other Locations

Additional Notes

The bulb type 94 is the most frequently specified engine compartment light bulb across the Chevrolet Brookwood, covering the 1958-1961 model years.
The 94 bulb is a dual-filament type rated at 12V with a 21/5W output, mounted on a BAY15d bayonet base, and is classified as a variant of the 1157 under ANSI standards applicable in both the US and Canada.
The BAY15d base used by the 94 bulb features offset pins, which physically prevents it from being interchanged with bulbs using the single-pin BA15s base, such as the 1003 or 1156.
The 1969-1970 model years share the 1156 as the specified engine compartment bulb, while the 1972 model year uses the 1003.
Both the 1003 and 1156 are single-filament bulbs rated at 12V and 21W, each using the BA15s bayonet base under ANSI standards for the US and Canadian markets.
Despite their identical electrical ratings and shared BA15s base type, the 1003 and 1156 are distinct ANSI part numbers and are not universally treated as interchangeable across all applications.