Suzuki Motorcycle M109RZ Boulevard Limited Turn Signal Bulb Size

Suzuki Motorcycle M109RZ Boulevard Limited front turn signal bulbs use 1034NA size while rear turn signal bulbs use 12496 or PY21W size. The replacement chart covers 2007 to 2014 production years with corresponding bulb size specifications.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Turn Signal

Years	Bulb Type	Shop
2011-2014	1034NA	Check Price
2007-2009	1034NA	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
2014	12496	12496	Check Price
2012-2013	7507	PY21W	Check Price
2011	12496	12496	Check Price
2009	12496	12496	Check Price
2007-2008	7507	PY21W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Variant of 1157. 12V, 21/5W.	1034NA	Check Price
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 front turn signal position on the Suzuki Motorcycle M109RZ Boulevard Limited uses the 1034NA bulb across all listed model years from 2007-2014, with no variation between years.
The 1034NA is an ANSI-standard dual-filament bulb rated at 12V and 21/5W, fitted with a BAY15d bayonet base and natural amber glass. It is a variant of the widely used 1157 bulb type.
The rear turn signal position does not share a single bulb type across all listed years. It alternates between the 12496 and PY21W designations depending on the model year.
The PY21W is an ECE-standard single-filament amber bulb rated at 12V and 21W, fitted with a BAU15s bayonet base. The BAU15s base uses an offset pin arrangement that differs from the symmetrical BAY15d base found on the 1034NA, making the two bulbs physically non-interchangeable.
The 12496 is a Philips/Osram part number designating a 12V halogen bulb for specialty applications. It is used in the rear turn signal for model years 2009, 2011, and 2014.
The PY21W is used in the rear turn signal for model years 2007, 2008, 2012, and 2013. The difference in base design between the PY21W and the 1034NA means a front turn signal bulb cannot serve as a direct replacement for a rear turn signal bulb on this model.
The dual-filament nature of the 1034NA, with separate 21W and 5W outputs, contrasts with the single-filament 21W output of the PY21W, reflecting a functional difference between the front and rear turn signal circuits on this model.
The ANSI designation of the 1034NA and the ECE designation of the PY21W reflect different regional standardization systems, with ANSI governing North American markets and ECE governing European and international markets.