The Toyota Land Cruiser brake light utilizes 7443, 1157, and 1034 bulb sizes depending on the specific production era of the vehicle. Available data covers the range from 1969 through 2005 for the specified lighting components.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7443 is a dual-filament wedge bulb of the T20 type, rated at 12V with a 21W high-filament and 5W low-filament output. Its wedge base design differs from the bayonet-style fittings used in older bulb types, meaning it is not physically interchangeable with BAY15d-based bulbs.
The 1157 and 1034 both use the BAY15d bayonet base and share the same 12V, 21W/5W dual-filament configuration. The 1034 is classified as a variant of the 1157, though the two are not confirmed as drop-in replacements for one another without verifying socket and filament offset compatibility.
All three bulb types listed across these specifications carry ANSI standard designations applicable to the US and Canadian markets.
The Toyota Land Cruiser transitioned from the 1034 to the 1157 between the 1974 and 1975 model years for the brake bulb position, representing a shift between two related but distinct BAY15d variants.
A second transition occurred between the 1997 and 1998 model years, when the brake bulb specification changed from the BAY15d-based 1157 to the wedge-type 7443, reflecting a change in socket architecture that makes the two groups mutually incompatible.
For the Outer Brake sub-position, the 1998 model year carries a production date qualifier, with the 7443 specification applying from January 1998 onward. The 2005 model year for the same position is noted as applicable through May 2005.
The dual-filament design of all three bulb types serves two functions within a single housing: the higher-wattage filament activates under braking, while the lower-wattage filament operates as a running or parking light.