BMW Motorcycle R1200CL front and rear turn signal bulbs use a P21W size. The replacement chart covers 2002 to 2006 production years with bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The P21W is the sole bulb type specified for the BMW Motorcycle R1200CL, covering both front and rear turn signals across all listed model years.
The P21W is a single-filament bulb, meaning it serves one lighting function only, which is consistent with its dedicated use in turn signal applications.
The P21W operates at 12 volts and 21 watts, a wattage rating that reflects the higher output traditionally associated with incandescent turn signal bulbs under ECE regulations.
The P21W uses a BA15s bayonet base, where "BA" denotes a bayonet cap fitting, "15" refers to the 15mm base width, and "s" indicates a single contact at the base.
The P21W is governed by ECE standards, a regulatory framework recognized across Europe and numerous other markets worldwide, distinguishing it from SAE-spec bulbs used in North American applications.
The BA15s single-contact base of the P21W is not interchangeable with the BA15d base, which carries two contacts and is found on dual-filament bulbs such as the P21/5W. Substituting one for the other is not possible without modification.
The R1200CL uses the same P21W specification for both front and rear turn signals across the 2002-2006 model years, indicating a uniform fitment requirement across all four signal positions on the motorcycle.