Oldsmobile Jetfire front and rear turn signal bulbs both utilize a 1034 size bulb for proper illumination. The replacement chart covers 1962 to 1963 model 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 Jetfire uses the 1034 bulb across both its front and rear turn signal positions for the 1962-1963 model years.
The 1034 is an ANSI-standardized bulb recognized in both the United States and Canada, operating at 12 volts with a dual-filament output rated at 21/5 watts.
A dual-filament design means the 1034 produces two distinct levels of brightness from a single bulb, which allows one filament to serve a steady low-intensity function while the other handles a higher-intensity signal flash.
The 1034 uses a BAY15d bayonet base, a two-pin offset base type where the two pins are positioned at different heights to ensure the bulb is seated in only one rotational orientation.
The 1034 is a variant of the more widely known 1157 bulb, sharing the same general dual-filament, BAY15d bayonet configuration, though the two are not identical and are not confirmed as interchangeable within these specifications.
Because the 1034 and 1157 are related but distinct part numbers, substituting one for the other without verifying electrical compatibility with the Jetfire's specific socket and circuit requirements falls outside what these specifications address.
The uniform use of the 1034 across both the front and rear turn signal positions on the Jetfire simplifies parts sourcing, as a single bulb type covers all four turn signal sockets on the vehicle.