Honda Motorcycle CBR1100XX Super Blackbird Turn Signal Bulb Size
Honda Motorcycle CBR1100XX Super Blackbird front turn signal bulbs measure P21/5W or 1034 in size, while rear turn signal bulbs measure P21W or 1073 in size. The replacement chart covers 1997 to 2003 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 Honda Motorcycle CBR1100XX Super Blackbird uses four distinct bulb types across its front and rear turn signals for the 1997-2003 model years: P21/5W, 1034, P21W, and 1073.
The P21/5W and 1034 are both dual-filament bulbs sharing the BAY15d bayonet base, operating at 12V with a 21W/5W output. The P21/5W follows the ECE standard used in Europe and worldwide markets, while the 1034 follows the ANSI standard used in the US and Canada.
The front turn signal on the CBR1100XX Super Blackbird uses a dual-filament bulb throughout all listed model years, with the 1034 fitted on 1997-2000 models and the P21/5W fitted on 2001-2003 models.
The rear turn signal uses single-filament bulbs across all listed model years, though the specific type varies by year.
The P21W and 1073 are both single-filament bulbs sharing the BA15s bayonet base. The P21W is rated at 21W, while the 1073 is rated at 13W, making the 1073 a lower-wattage variant relative to the P21W.
The 1034 is noted as a variant of the 1157, and the 1073 is noted as a lower-wattage variant of the 1156, both within the ANSI standard family of automotive bulbs.
Although the P21/5W and 1034 share the same BAY15d base and similar wattage ratings, one conforms to ECE standards and the other to ANSI standards, which reflects a regional market distinction rather than a functional difference in base fitment.
The rear turn signal on the CBR1100XX Super Blackbird shows variation across consecutive model years, with P21W fitted on 1997-1998, 1073 on 1999-2000, P21W again on 2001, 1073 on 2002, and P21W on 2003.
Because the BA15s base used by the P21W and the 1073 differs from the BAY15d base used by the P21/5W and the 1034, front and rear turn signal bulbs on this motorcycle are not interchangeable with one another.
The wattage difference between the P21W at 21W and the 1073 at 13W means these two single-filament bulbs are not direct electrical equivalents, despite sharing the same BA15s bayonet base.