The Buell XB9R Firebolt uses 5008 and 232 size bulbs for both front and rear turn signal applications, with these bulb sizes remaining consistent across the motorcycle model. The replacement chart covers 2002 through 2007 production years and documents the turn signal bulb specifications for this vehicle range.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 5008 is the most frequently specified bulb across both front and rear turn signal positions on the Buell XB9R Firebolt, appearing in the majority of model years between 2002 and 2007.
The 5008 is a single-filament bulb operating at 12V with a BA15s bayonet base, and it is a lower wattage variant of the widely known 1156 bulb type.
The 232 is a festoon bulb with an SV8.5 base, rated at 12V and 3W, and it serves as an alternative fitment in select model years of the XB9R Firebolt.
The BA15s bayonet base of the 5008 and the SV8.5 festoon base of the 232 are physically incompatible with each other, meaning the two bulb types are not interchangeable despite both operating at 12V.
The front turn signal on the 2006 Buell XB9R Firebolt uses the 232 festoon bulb, while the rear turn signal for that same year uses the 5008, indicating that the front and rear positions do not share the same bulb type for that model year.
The front turn signal on the 2005 Buell XB9R Firebolt uses the 5008, while the rear position for that year uses the 232, again reflecting a mismatch between front and rear fitments within a single model year.
Both the 5008 and the 232 conform to ANSI standards applicable in the United States and Canada, placing them within the same regional standardization framework despite their differing base types and form factors.
The 2002 model year specifies the 232 for the front turn signal and the 5008 for the rear, a split fitment pattern that also occurs in 2005 and 2006, making year-specific verification necessary before replacement.