The Toyota Mark II front and rear turn signal bulbs both utilize a 1157 size bulb for proper illumination. The replacement chart covers vehicle production spanning 1972 to 1976 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 Toyota Mark II uses the 1157 bulb for both front and rear turn signals across all listed model years, 1972-1976.
The 1157 is an ANSI-standardized bulb type recognized across the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared by multiple manufacturers.
The 1157 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, one rated at 21W and one at 5W, allowing it to serve both a high-intensity signaling function and a lower-intensity running or parking light function from a single socket.
The 1157 uses a BAY15d bayonet base, which is an offset double-contact base. The offset pin placement prevents the bulb from being inserted in the wrong orientation, ensuring the correct filament is activated by each circuit.
The bulb operates at 12 volts, consistent with the standard automotive electrical systems of the era.
Because the same 1157 bulb is specified for both the front and rear turn signal positions across all listed years, the two positions share a physically and electrically interchangeable fitment.