Suzuki Motorcycle GSX-R600 Turn Signal Bulb Size

Suzuki Motorcycle GSX-R600 front and rear turn signal bulbs use a 12496 or PY21W size. The replacement chart covers 2011 through 2019 model 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.

Front Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2018-2019	12496	12496	Check Price
2017	7507	PY21W	Check Price
2016	12496	12496	Check Price
2014-2015	7507	PY21W	Check Price
2012-2013	12496	12496	Check Price
2011	7507	PY21W	Check Price

Rear Turn Signal

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2018-2019	12496	12496	Check Price
2017	7507	PY21W	Check Price
2013-2016	12496	12496	Check Price
2011-2012	7507	PY21W	Check Price

Bulb Specifications

Description	Type	Shop
Philips/Osram part number. Halogen bulb, specialty application. 12V.	12496	Check Price
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W	Check Price

Other Locations

Additional Notes

The two bulb types specified across all model years of the Suzuki Motorcycle GSX-R600 turn signal positions are the 12496 and the PY21W. Both operate at 12 volts, making them electrically compatible in terms of system voltage.
The 12496 is a halogen bulb designated for specialty applications and is identified by a Philips/Osram part number rather than a universal industry standard code. Its wattage is not specified in the provided data.
The PY21W follows the ECE (Economic Commission for Europe) standard, which is recognized across Europe and many international markets. It is a single-filament amber bulb rated at 21 watts and uses a BAU15s offset bayonet base.
The BAU15s base of the PY21W features an offset pin arrangement, which physically prevents it from being seated in sockets designed for the more common BA15s base. This makes the PY21W non-interchangeable with standard single-contact bayonet bulbs despite their similar appearance.
The front and rear turn signal positions do not always share the same bulb type within a given model year. For example, the 2015 GSX-R600 specifies a PY21W for the front position and a 12496 for the rear position.
The 12496 designation is used for both front and rear turn signals across the 2012-2013 and 2016-2019 model years, though the 2012 rear position specifies a PY21W rather than the 12496 used at the front that same year.
The PY21W appears in the front turn signal position for the 2011, 2014-2015, and 2017 model years, and in the rear turn signal position for the 2011-2012 and 2017 model years.