Harley-Davidson XR1200 Turn Signal Bulb Size

The Harley-Davidson XR1200 rear turn signal bulb operates with a P21W size specification. The replacement chart covers 2009 to 2012 vehicle production 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.

Rear Turn Signal

Years	Bulb Size
2009-2012	P21W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W

Other Locations

Additional Notes

The P21W is the sole bulb type listed across all rear turn signal positions for the Harley-Davidson XR1200, covering model years 2009-2012.
The P21W operates at 12 volts and consumes 21 watts, classifying it as a single-filament bulb intended for signalling functions rather than illumination.
The BA15s bayonet base is a single-contact fitting, distinguishing it from the dual-contact BA15d base. This difference is a critical interchangeability factor, as a BA15d bulb is not a compatible substitute despite sharing the same physical base width.
The P21W is governed by ECE (Economic Commission for Europe) standards, reflecting its origin as a globally adopted specification used across a wide range of international vehicle markets.