Volvo S90 high beam headlight bulbs use H9 or 9005 sizes, while low beam headlight bulbs use H11, H7, or 9006 sizes according to the replacement bulb chart. The chart covers 1997 to 2021 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.
The H9 bulb is a halogen type operating at 65 watts with a PGJ19-5 base, and it serves as the high beam headlight bulb for the Volvo S90 across the 2017-2021 model years, with 2017-2020 entries specifying fitment only on vehicles equipped with halogen capsule headlamps.
The 9005 bulb, also known as HB3, uses a P20d base and operates at 65 watts. It was the high beam headlight bulb for the S90 in 1997-1998.
For low beam headlights, the H11 bulb applies to the 2018-2021 model years, while the 2017 model year uses the H7 bulb instead, both fitments restricted to halogen capsule headlamp configurations for 2017-2020.
The H11 and H7 bulbs share the same 55-watt power rating but use different bases, PGJ19-2 and PX26d respectively, making them non-interchangeable despite the similar wattage.
The 9006 bulb, also known as HB4, uses a P22d base and operates at 55 watts. It was the low beam headlight bulb for the S90 in 1997-1998.
Although the 9005 and 9006 bulbs share a physically similar housing, they are not interchangeable due to different tab positions on their bases, a design feature intended to prevent incorrect installation.
The H9 and H11 bulbs used in the 2018-2021 S90 belong to the same PGJ19 base family but differ in their contact configurations, which prevents cross-fitment between high and low beam positions.
The 2017 low beam specification calling for H7 rather than H11 represents a distinct fitment requirement from the 2018-2021 years, and substituting one for the other would be incorrect due to base incompatibility.