Honda Motorcycle CBF600SA front and rear turn signal bulbs use a P21W size. The replacement chart covers 2010 to 2012 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.
The P21W is the sole bulb type across all turn signal positions on the Honda Motorcycle CBF600SA, covering both front and rear applications for the 2010-2012 model years.
The P21W operates at 12 volts and consumes 21 watts, which is the standard wattage for single-filament automotive turn signal bulbs.
The P21W uses a BA15s bayonet base, a single-contact fitting where the "s" denotes a single pin offset to one side, which prevents incorrect insertion.
As a single-filament bulb, the P21W is dedicated to one function per housing, meaning it does not serve a combined stop and tail role.
The P21W is governed by ECE regulations, a lighting standard adopted across Europe and numerous other markets worldwide.
Because the front and rear turn signals on the CBF600SA share the same P21W specification, a single bulb type serves all four indicator positions on the motorcycle.
The BA15s base is not interchangeable with the BA15d base, which carries two offset pins. Substituting a BA15d bulb into a BA15s socket is not possible without modification.