The Aprilia RST1000 Futura uses 5008 and 232 bulb sizes for both front and rear turn signal applications. Replacement specifications in the chart span 2001 to 2005 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Aprilia RST1000 Futura uses two distinct bulb types across its front and rear turn signal positions: the 5008 and the 232, both of which are ANSI-standard bulbs rated for 12V electrical systems.
The 5008 is a single-filament bulb with a BA15s bayonet base. It is described as a lower wattage variant of the 1156, which is a widely used automotive turn signal bulb sharing the same base type.
The 232 is a festoon bulb with an SV8.5 base, rated at 12V and 3W. Festoon bulbs are cylindrical in form and mount by pressing between two spring contacts at each end, rather than inserting into a socket.
The BA15s bayonet base of the 5008 and the SV8.5 festoon base of the 232 are physically incompatible mounting types, meaning the two bulbs are not interchangeable with each other.
For the front turn signal on the RST1000 Futura, the 5008 bulb is specified for 2001 and 2003-2005, while the 232 is specified for 2002.
For the rear turn signal, the 5008 is specified for 2002 and 2004-2005, while the 232 is specified for 2001 and 2003.
The front and rear turn signal positions do not share the same bulb type in every model year, meaning the front and rear sockets on a given vehicle may require different bulbs depending on the year.
In 2004 and 2005, both the front and rear turn signals use the 5008 bulb, making those the only years where a single bulb type covers all four turn signal positions.