Chevrolet Parkwood front and rear turn signal bulbs utilize a 1034 size across both locations. The replacement chart covers 1959 to 1961 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1034 bulb is an ANSI-standardized type recognized in both the United States and Canada, operating at 12 volts with a dual-filament design rated at 21/5 watts.
The dual-filament construction of the 1034 allows it to serve two distinct brightness levels within a single housing, which is why it is suited for combined turn signal and running light functions.
The 1034 uses a BAY15d bayonet base, a two-pin offset base type where the two pins are positioned at different heights to ensure correct orientation during installation.
The 1034 is a variant of the more widely known 1157 bulb, meaning the two types share a close relationship in design, though they are not directly interchangeable due to differences in pin offset and electrical ratings.
The Chevrolet Parkwood uses the 1034 bulb for both the front and rear turn signal positions across the 1959-1961 model years.
The consistent use of the same bulb type across both front and rear positions means the Parkwood requires only one bulb specification for all four turn signal sockets.