Harley-Davidson XR1200 Tail Light Bulb Size

The Harley-Davidson XR1200 tail light uses a 3157 bulb size for replacement applications. The 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.

Bulb Size by Year Range

Years	US Type	EU Type	Shop
2009-2012	3157	P27/7W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157	Check Price

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Additional Notes

The Harley-Davidson XR1200 uses the 3157 bulb for its tail light across the 2009-2012 model years.
The 3157 is an ANSI-standardized bulb type, meaning its specifications are governed by a formal industry standard recognized in the United States and Canada.
This bulb follows the T25 wedge form factor, which refers to its base style and overall envelope shape rather than a screw or bayonet mount.
The 3157 carries a dual-filament design, operating at 27W for the brighter stop/turn function and 7W for the lower-intensity running light function within the same bulb housing.
Operating voltage is rated at 12V, consistent with the standard electrical system found in most production motorcycles.
Because the 3157 is dual-filament, substituting a single-filament equivalent would result in the loss of one lighting function, making filament count a critical factor in replacement selection.