The Pontiac Streamliner front and rear turn signal bulbs both utilize a 1154 size bulb for proper operation. The replacement chart covers 1950 through 1952 production 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 1154 bulb is the sole turn signal bulb type listed for the Pontiac Streamliner, appearing in both front and rear turn signal positions across the 1950-1952 model years.
The 1154 is a dual-filament bulb, meaning it carries two separate filaments within a single envelope, allowing it to serve more than one lighting function simultaneously, such as combined stop and turn signal duties.
The 1154 uses a BAY15d bayonet base, a two-pin offset bayonet mount in which the two pins are positioned at different heights along the base to ensure correct orientation during installation.
The 1154 is rated for both 6V and 12V operation, reflecting the transitional period in automotive electrical systems during the early 1950s when 6-volt systems were still common in production vehicles.
The 1154 carries ANSI standardization and is recognized in both the United States and Canada, placing it within a formal North American bulb classification system.
The 1154 is described as an older variant of the 1157, a bulb that later became one of the most widely used dual-filament automotive bulbs. The two types share a similar function but are not confirmed as interchangeable within these specifications.