Land Rover LR3 front inner turn signal bulbs measure 3157, front outer turn signal bulbs measure 12961, front turn signal bulbs measure 3457 or 3457NA, and rear turn signal bulbs measure P21W in size. The replacement chart covers 2005 to 2009 vehicle 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 Land Rover LR3 (2005-2009) uses five distinct bulb types across its turn signal positions: 3157, 3457, 3457NA, 12961, and P21W.
The 3157 and 3457 are both ANSI-standard dual-filament T25 wedge bulbs rated at 12V with a 27W/7W output, where the higher wattage filament serves the turn signal function and the lower wattage filament serves a secondary lighting function.
The 3457NA variant carries the same electrical ratings as the 3457 but features natural amber glass, which produces an amber signal output without relying on a colored lens or housing.
The front turn signal position on the 2005-2007 LR3 specifies the 3457NA, while the 2008-2009 model years specify the 3457, indicating a shift from a self-colored amber bulb to a clear-glass equivalent in the later production years.
The front inner turn signal position uses the 3157 across all model years (2005-2009), a bulb that shares the same T25 form factor and wattage ratings as the 3457 family but carries a different ANSI designation.
Although the 3157 and 3457 share identical voltage and wattage ratings, they are not confirmed as interchangeable within these specifications, and substituting one for the other without verification of base and socket compatibility carries fitment risk.
The front outer turn signal on the 2005-2008 LR3 uses the 12961, a Philips-designated miniature T10 wedge bulb with a W2.1x9.5d base rated at 12V and 5W, which is a single-filament low-wattage bulb distinct in both size and function from the T25 bulbs used elsewhere.
The rear turn signal across all model years (2005-2009) uses the P21W, an ECE-standard single-filament bulb with a BA15s bayonet base rated at 12V and 21W, a base type that is physically incompatible with the wedge-base sockets used by the front signal positions.
The P21W follows European ECE standards, while the 3157, 3457, and 3457NA follow North American ANSI standards, reflecting a mixed lighting architecture across the front and rear of the LR3.
The W2.1x9.5d base of the 12961 is a miniature wedge format not shared by any other bulb type in these specifications, making it a position-specific fitment with no cross-compatibility to the T25 or BA15s positions on the same vehicle.