Volvo V90 Turn Signal Bulb Size

Volvo V90 front turn signal bulbs use 12174NA, PY24WNA, or 1034NA sizes, while rear turn signal bulbs use H21W or PY21W sizes. The replacement bulb chart covers 1997 to 2021 production years with corresponding 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 Size
2021	12174NA
2018-2019	PY24WNA (With Halogen Capsule Headlamps)
1998	1034NA
1997	1157NA

Rear Turn Signal

Years	Bulb Size
2021	H21W
1997-1998	PY21W

Bulb Specifications

Description	Bulb Size
OEM part number. Natural amber glass variant. 12V.	12174NA
ANSI standard (US & Canada). Amber variant of ECE PY24W with PGU20-4 base. 12V, 24W.	PY24WNA
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Variant of 1157. 12V, 21/5W.	1034NA
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 21W/5W.	1157NA
ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W.	H21W
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.	PY21W

Other Locations

Additional Notes

The PY24WNA is an ANSI-standard bulb rated at 12V and 24W, featuring a PGU20-4 base. It serves as the amber variant of the ECE PY24W and applies to the Volvo V90 front turn signal for 2018-2019, specifically on trims equipped with halogen capsule headlamps.
The halogen capsule headlamp condition attached to the 2018-2019 PY24WNA fitment indicates that V90 variants with a different headlamp configuration may use a different front turn signal bulb for those years.
The 12174NA is an OEM part number rather than an ANSI or ECE standard designation. It is a natural amber glass bulb rated at 12V and applies to the 2021 V90 front turn signal.
The 1157NA and 1034NA are both ANSI-standard dual-filament bulbs sharing the BAY15d bayonet base and a 12V, 21W/5W output rating. Both feature natural amber glass, and the 1034NA is formally classified as a variant of the 1157.
Despite their technical similarity, the 1997 V90 front turn signal uses the 1157NA while the 1998 model uses the 1034NA. Because the 1034NA is a variant of the 1157, physical fitment may overlap, though substitution between the two is not confirmed by the specifications.
The H21W is an ECE-standard single-filament bulb rated at 12V and 21W, using a BAY9s base. It applies to the 2021 V90 rear turn signal.
The PY21W is an ECE-standard single-filament amber bulb rated at 12V and 21W, using a BAU15s bayonet base. It applies to the 1997-1998 V90 rear turn signal.
The BAY9s base of the H21W and the BAU15s base of the PY21W are physically distinct, making the 2021 rear turn signal bulb incompatible with the 1997-1998 socket and vice versa.
The rear turn signal specifications for the V90 use ECE-standard bulbs across all listed years, while the front turn signal specifications shift between ANSI-standard and OEM-designated types depending on the year.
The PGU20-4 base on the PY24WNA is a wedge-type base specific to certain halogen capsule lamp housings, and it is not interchangeable with the bayonet-style bases found on the other bulbs listed in these specifications.