The Oldsmobile Cutlass brake light uses 3357, 3057, 1157, and 1034 bulb sizes depending on the specific version of the vehicle. Available data covers the range from 1961 through 1999.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1157 bulb is the most widely used brake bulb across the Oldsmobile Cutlass specifications, covering model years 1964-1981. It is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 21W/5W filament configuration, and meets the ANSI standard for the US and Canada.
The BAY15d bayonet base on the 1157 features offset pins, which physically prevent incorrect installation by ensuring the bulb seats in only one orientation. This base design is standard across both the 1157 and its variant, the 1034.
The 1034 bulb, specified for the Oldsmobile Cutlass for model years 1961-1963, shares the BAY15d bayonet base and the same 12V, 21W/5W rating as the 1157. It is classified as a variant of the 1157 under the ANSI standard.
The 3057 bulb is specified for the Cutlass for model years 1997-1998. It is a dual-filament wedge bulb in the T25 form factor, rated at 12V with a 27W/7W output, and also meets the ANSI standard for the US and Canada.
The 3357 bulb, specified for the 1999 Oldsmobile Cutlass brake light, is a single-filament wedge bulb in the T25 form factor rated at 12V and 27W. Unlike the 3057 used in 1997-1998, it carries only one filament, which is a functional distinction relevant to brake light circuit compatibility.
The 3357 and 3057 share the same T25 wedge form factor and voltage rating, but differ in filament count. Substituting one for the other without verifying the circuit requirements may result in incorrect brake or tail light function.
The center high mount stop light on the Cutlass for model years 1997-1999 uses the 912 bulb, a T15 wedge type rated at 12V and 12W. It is classified as a variant of the 921 under the ANSI standard.
The 912 and 921 share the same T15 wedge base, but the 912 is rated at 12W while the 921 is rated at 16.8W. This wattage difference is a relevant consideration when evaluating cross-compatibility between the two bulbs in the center high mount stop light socket.
The wedge base design used by the 3057, 3357, and 912 bulbs relies on the bulb's plastic base being pressed directly into the socket, with no separate metal base component. This differs from the bayonet base mechanism used by the 1157 and 1034.
All bulb types specified for the Oldsmobile Cutlass brake lights conform to ANSI standards applicable in both the US and Canada, indicating consistent regulatory compliance across the full range of model years covered in the specifications.