Honda Motorcycle XR250L front and rear turn signal bulbs use a P21W or 1073 size. The replacement chart covers 1991 to 1996 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 two bulb types specified across all Honda Motorcycle XR250L turn signal positions are the P21W and the 1073, both of which use a BA15s single-contact bayonet base.
The P21W is an ECE-standard bulb used in European and worldwide markets, rated at 12V and 21W with a single filament.
The 1073 is an ANSI-standard bulb used in the US and Canadian markets, rated at 12V and 13W, and is a lower-wattage variant of the 1156 bulb.
Although the P21W and 1073 share the same BA15s bayonet base, their wattage ratings differ significantly, at 21W and 13W respectively, which makes them non-interchangeable without accounting for the electrical load difference.
For the Honda Motorcycle XR250L front turn signal, the P21W is specified for the 1991 and 1993-1996 model years, while the 1073 is specified for 1992.
The rear turn signal position shows a mixed fitment pattern across the model range, with the 1073 specified for 1992-1993 and 1996, and the P21W specified for 1991 and 1994-1995.
The 1992 model year is the only year in which the 1073 bulb is specified for the front turn signal position, setting it apart from all other years in the front fitment data.
The 1996 model year presents an asymmetric configuration, with the P21W at the front and the 1073 at the rear, meaning the front and rear turn signal positions do not share the same bulb type that year.
The same asymmetric front-to-rear configuration occurs in 1991 and 1992, where the front and rear positions are also fitted with different bulb types from one another.
The 1994-1995 model years are the only consecutive years in which both the front and rear turn signal positions share the same bulb type, the P21W, across both positions simultaneously.