Plymouth Cranbrook front and rear turn signal bulbs both use 1154 size bulbs for proper operation. The replacement chart covers 1951 through 1953 model 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 1154 bulb is the sole turn signal bulb type listed for the Plymouth Cranbrook, appearing in both front and rear turn signal positions across the 1951-1953 model years.
The 1154 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical standards shared across those markets.
As a dual-filament bulb, the 1154 contains two separate filaments within a single envelope, allowing it to serve more than one lighting function from a single socket.
The 1154 uses a BAY15d bayonet base, a two-pin offset bayonet mount in which the two pins are positioned at different heights to ensure the bulb is inserted in only one orientation, preventing filament misassignment.
The 1154 is described as an older variant of the 1157, meaning the two types share a similar design lineage, though they are not directly interchangeable without confirming voltage and base compatibility.
The 1154 is rated for both 6V and 12V operation, reflecting the transitional period in automotive electrical systems during the early 1950s when some vehicles still used 6-volt systems while others had moved to 12-volt systems.