Harley-Davidson XL1200R Sportster 1200 Roadster Turn Signal Bulb Size

Harley-Davidson XL1200R Sportster 1200 Roadster rear turn signal bulb size is 199 and P21W. The replacement chart covers vehicle production years spanning 2004 to 2008 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.

Rear Turn Signal

Years	Bulb Size
2007-2008	199
2004-2006	P21W

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	199
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W

Other Locations

Additional Notes

The rear turn signal specifications for the Harley-Davidson XL1200R Sportster 1200 Roadster cover the 2004-2008 model years, with two distinct bulb types listed across that range.
The 199 bulb is an ANSI-standard single-filament type operating at 12V and 21W, fitted with a BA15s bayonet base. It appears in the 2007-2008 model years for the rear turn signal position.
The P21W is an ECE-standard single-filament signalling bulb, also rated at 12V and 21W with a BA15s bayonet base. It is specified for the 2004-2006 model years in the same rear turn signal position.
Although the 199 and P21W share identical voltage, wattage, and base type, they originate from different standardization systems. The 199 follows the ANSI standard used in the United States and Canada, while the P21W follows the ECE standard used in Europe and internationally.
The BA15s bayonet base is a single-contact fitting, which corresponds to the single-filament construction of both bulb types. This base type is not compatible with dual-filament sockets, which use the BA15d double-contact base.
The 199 is described as a variant of the 1156 bulb. The 1156 is a widely used ANSI-coded automotive bulb, and the 199 shares its core electrical characteristics while carrying a distinct trade designation.
Because both the 199 and P21W share the same base type and electrical ratings, physical fitment across the two standards is functionally equivalent in this application, though the regulatory classification of each bulb differs by market.