Lamborghini Gallardo Turn Signal Bulb Size

The Lamborghini Gallardo uses 3357NA, 3457NA, or H21W bulbs for front turn signals and 5201, 12496, or PY21W bulbs for rear turn signals, with each size corresponding to specific applications. The replacement chart covers 2004 through 2014 model years and documents bulb size specifications across the vehicle's production range.

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 Size
2014	3357NA
2011-2013	3457NA
2010	3357NA
2009	3457NA
2004-2008	H21W

Rear Turn Signal

Years	Bulb Size
2009-2014	5201
2007-2008	12496
2005-2006	PY21W
2004	12496

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament wedge bulb (T25), natural amber glass. 12V, 27W.	3357NA
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.	3457NA
ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W.	H21W
ANSI standard (US & Canada). Single-filament halogen bulb with PG20-1 base. 12V, 19W.	5201
Philips/Osram part number. Halogen bulb, specialty application. 12V.	12496
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W

Other Locations

Additional Notes

The Lamborghini Gallardo front turn signal uses two distinct bulb families across its production run: the H21W for 2004-2008 model years and wedge-style T25 bulbs (3357NA or 3457NA) for 2009-2014 model years.
The H21W bulb follows the ECE standard used in Europe and worldwide, operates at 12V and 21W, and uses a BAY9s base, which is a specialized bayonet fitting not shared with the T25 wedge bulbs used in later Gallardo model years.
The 3457NA is a dual-filament T25 wedge bulb rated at 12V with a 27W primary filament and a 7W secondary filament, while the 3357NA is a single-filament T25 wedge bulb rated at 12V and 27W. Both carry natural amber glass and follow the ANSI standard applicable to the US and Canada.
Despite sharing the same T25 wedge form factor, the 3357NA and 3457NA are not functionally identical due to the filament count difference. The Lamborghini Gallardo front turn signal uses the 3457NA for 2009 and 2011-2013, and the 3357NA for 2010 and 2014.
The rear turn signal of the Lamborghini Gallardo uses the 5201 bulb for 2009-2014. This is an ANSI-standard single-filament halogen bulb with a PG20-1 base, rated at 12V and 19W.
The PG20-1 base on the 5201 bulb is a pin-type fitting, which is physically incompatible with the bayonet-style bases found on the H21W, PY21W, and 12496 bulbs used in earlier Gallardo rear turn signal positions.
The rear turn signal for 2006-2005 uses the PY21W, an ECE-standard single-filament amber bulb with a BAU15s offset bayonet base, rated at 12V and 21W. The BAU15s base has an offset pin arrangement that prevents installation in standard BA15s sockets.
The 12496 is a Philips/Osram part number designation for a specialty halogen bulb rated at 12V, used in the Gallardo rear turn signal for 2004 and 2007-2008. It does not carry an ANSI or ECE classification in the provided specifications.
A notable fitment consideration exists for the Lamborghini Gallardo rear turn signal: three different bulb types (PY21W, 12496, and 5201) are specified across the 2004-2014 production span, and none of these share a common base type, indicating direct interchangeability between years is not possible without a socket adapter or wiring modification.
The front turn signal position shows a similarly fragmented fitment pattern, with the BAY9s-based H21W giving way to T25 wedge bulbs starting in 2009, meaning front housings from 2004-2008 and those from 2009 onward are designed around incompatible socket types.