Suzuki Motorcycle SFV650 front and rear turn signal bulbs utilize a 12496 PY21W bulb size across both positions. The replacement chart covers 2013 to 2015 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 PY21W is an ECE-standardized single-filament amber bulb operating at 12V and 21W, fitted with a BAU15s bayonet base. The BAU15s base uses offset pins to prevent incorrect installation with non-amber bulbs sharing similar housings.
The 12496 is a Philips/Osram part number designating a 12V halogen bulb intended for specialty automotive applications. It is not an ECE or SAE category designation but rather a manufacturer-specific reference.
For the 2013 Suzuki SFV650, both the front and rear turn signals use the PY21W bulb, making the fitment uniform across all four positions that year.
In 2014, the front turn signal retains the PY21W, while the rear turn signal transitions to the 12496. This means the front and rear positions are not interchangeable that year despite both being turn signal applications.
By 2015, both front and rear turn signals use the 12496, replacing the PY21W across all positions. This represents a complete departure from the ECE-standard bulb used in earlier positions.
The BAU15s base of the PY21W is distinct from the more common BA15s base. The offset pin arrangement means a BA15s bulb cannot be substituted without risking improper seating or polarity misalignment.
Because the 12496 is identified by a manufacturer part number rather than a universal standard, cross-referencing with Philips or Osram catalogues is necessary to source equivalent replacements from other brands.
Both bulb types operate at 12V, which is consistent with standard motorcycle electrical systems, though the PY21W carries an explicit 21W rating while the 12496 wattage is defined by its manufacturer specification rather than a universal category.