Kawasaki KL250 Super Sherpa Turn Signal Bulb Size

The Kawasaki KL250 Super Sherpa front turn signal bulb size is P21W, while the rear turn signal bulb size is P21W or 1073. The replacement chart covers 2009 to 2010 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.

Front Turn Signal

Years	US Type	EU Type	Shop
2009-2010	1156	P21W	Check Price

Rear Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2010	1156	P21W	Check Price
2009	1073	1073	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	1073	Check Price

Other Locations

Additional Notes

The P21W is an ECE-standard single-filament signalling bulb rated at 12V and 21W, fitted with a BA15s bayonet base. It is used in both the front and rear turn signals of the 2010 Kawasaki KL250 Super Sherpa, as well as the front turn signal of the 2009 model.
The 1073 is an ANSI-standard single-filament bulb rated at 12V and 13W, also using a BA15s bayonet base. It is specified for the rear turn signal of the 2009 KL250 Super Sherpa only.
The BA15s bayonet base is shared between the P21W and the 1073, meaning both bulbs use the same physical mounting interface despite originating from different regional standards.
Although the P21W and 1073 share the same base type, their wattage ratings differ significantly. The P21W draws 21W while the 1073 draws 13W, which means the two are not electrically equivalent and are not interchangeable without potential effects on turn signal flash rate or circuit load.
The 1073 is described as a lower wattage variant of the 1156. The 1156 is a common ANSI single-filament BA15s bulb rated at 21W, making the 1073 a reduced-output version within the same base family.
The rear turn signal position changed bulb specifications between 2009 and 2010, shifting from the ANSI 1073 to the ECE P21W, which also brought the rear turn signal into alignment with the front turn signal specification for the 2010 model year.