BMW Motorcycle RG1200GS front turn signal bulbs utilize 232 and 5008 sizes, while rear turn signal bulbs use the 5008 size. The replacement chart covers 2004 to 2006 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 5008 bulb is the most frequently specified type across the BMW Motorcycle R1200GS turn signal positions, appearing in both the front and rear turn signal applications for 2004-2005 and in the rear turn signal for 2006.
The 5008 is an ANSI-standard single-filament bulb rated at 12 volts, fitted with a BA15s bayonet base, and is classified as a lower wattage variant of the 1156 bulb type.
The BA15s bayonet base of the 5008 is a single-contact design, which means it is not interchangeable with dual-contact bayonet bases such as the BA15d used in some other automotive applications.
The 232 bulb is specified exclusively for the front turn signal of the BMW Motorcycle R1200GS in 2006, under the Without Clear Lens condition.
The 232 is an ANSI-standard festoon bulb rated at 12 volts and 3 watts, fitted with an SV8.5 base, a form factor physically distinct from the BA15s bayonet base of the 5008.
Because the 232 and 5008 use different base types, the two bulbs are not interchangeable despite both operating at 12 volts.
All entries across both sub-parts carry the qualifier Without Clear Lens, indicating that these bulb sizes apply specifically to that lens configuration.
The front turn signal position on the R1200GS shifted from the 5008 in 2004-2005 to the 232 in 2006, representing a change in both bulb form factor and base type for that specific position.