Toyota Land Cruiser Parking Light Bulb Size

Additional Notes

• The Toyota Land Cruiser front parking light position draws from three distinct bulb families across its production history: the T20 wedge type (7444NA and 7443NA), the T10 miniature wedge type (168), and bayonet-base types (1157, 1034, and 67), each representing a physically different socket and base design that is not interchangeable with the others.
• The 7444NA and 7443NA are both dual-filament T20 wedge bulbs rated at 12V with a 21W/5W filament split, meaning one filament handles a higher-intensity function while the second operates at lower wattage. Both conform to ANSI standards for the US and Canadian markets and feature natural amber glass rather than a clear envelope.
• Although the 7444NA and 7443NA share the same T20 wedge form, wattage rating, and voltage, they carry different ANSI designations, which indicates a difference in base keying or pin spacing. Substituting one for the other without confirming socket compatibility risks an improper fit.
• The Toyota Land Cruiser (front parking light) used the 7443NA for the 2013-2016 model years and transitioned to the 7444NA for 2018-2021, with both bulbs sharing the same natural amber glass and dual-filament T20 construction.
• The 168 is a single-filament T10 miniature wedge bulb rated at 12V and 4.9W, making it significantly lower in wattage than the T20 variants used in later years. Its wedge base is physically smaller than the T20 and is not compatible with T20 sockets.
• The 1157 and 1034 are both dual-filament bulbs sharing the BAY15d bayonet base, which uses two offset pins to ensure correct orientation during installation. The 1034 is classified as a variant of the 1157, and while both are rated at 12V and 21W/5W, their ANSI designations reflect differences in filament positioning or light output characteristics that affect direct interchangeability.
• The bulb 67 uses a BA15s single-contact bayonet base and is rated at 12V and 8W, functioning as a lower-wattage single-filament variant within the same bayonet family as the 1156. Its single-filament design distinguishes it from the dual-filament 1157 and 1034, and the two base types are not interchangeable despite their visual similarity.
• Across the front parking light position, four different base types appear in the specifications: the T20 wedge (7444NA, 7443NA), the T10 wedge (168), the BAY15d dual-offset bayonet (1157, 1034), and the BA15s single-contact bayonet (67). Each base type requires a physically distinct socket, and no cross-family substitution is possible without socket modification.