Volvo S80 front fog light bulbs use H8 and H1 sizes, while rear fog light bulbs use P21W size. The replacement chart covers 1999 to 2016 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 Volvo S80 front fog light uses two distinct bulb types across its production span, with the H1 fitted to 1999-2006 models and the H8 fitted to 2007-2016 models.
The H8 is a single-filament halogen bulb rated at 12V and 35W, using a PGJ19-1 base. It meets ECE standards and carries approval for use in the United States.
The H1 is a single-filament halogen bulb rated at 12V and 55W, using a P14.5s base. It meets ECE standards and carries approval in the United States and Japan.
Although both the H8 and H1 are single-filament halogen bulbs operating at 12V, their wattage and base types differ, making them physically incompatible with each other despite their shared general category.
The higher wattage of the H1 at 55W compared to the H8 at 35W reflects a difference in light output, with the H1 producing a brighter beam under equivalent operating conditions.
The rear fog light on the Volvo S80 uses the P21W bulb across the full 1999-2016 model range, representing the only fog light position with no bulb type change throughout production.
The P21W is a single-filament signalling bulb rated at 12V and 21W, fitted with a BA15s bayonet base. It meets ECE standards and is widely used in rear lighting applications across European-market vehicles.
The BA15s bayonet base of the P21W is a single-contact type, which is a relevant fitment detail when sourcing a replacement, as the visually similar BA15d base carries dual contacts and is not interchangeable.
The PGJ19-1 base of the H8 is specific to lower-wattage fog light applications and is not shared with other common halogen types such as the H11 or H9, despite those bulbs belonging to the same PGJ19 base family with differing pin configurations.
The P14.5s base of the H1 is a single-contact pin-type base used exclusively with the H1 bulb, distinguishing it from the P14.5d base found on dual-filament variants in the same size class.