Volvo C30 front fog light bulbs use H8 and H11 sizes, while rear fog light bulbs use P21W size. The replacement chart covers 2008 to 2013 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 C30 front fog light uses two different bulb types across its production run, with H11 fitted in 2008-2009 models and H8 fitted in 2010-2013 models.
The H8 is a single-filament halogen bulb operating at 12V and 35W, using a PGJ19-1 base. It follows the ECE standard, which applies across Europe and worldwide, and carries US approval as well.
The H11 is a single-filament halogen bulb operating at 12V and 55W, using a PGJ19-2 base. Like the H8, it is an ECE-standard bulb with US approval.
Although the H8 and H11 share a similar physical form and are both PGJ19-series halogen bulbs, their bases differ. The H8 uses a PGJ19-1 base while the H11 uses a PGJ19-2 base, making them non-interchangeable despite their visual resemblance.
The wattage difference between the two front fog bulbs is notable. The H11 draws 55W compared to the H8's 35W, meaning 2008-2009 front fog housings were designed around a higher-wattage output than those used in 2010-2013 models.
The Volvo C30 rear fog light uses the P21W bulb across all model years covered in the specifications, from 2008 through 2013.
The P21W is a single-filament signalling bulb rated at 12V and 21W. It uses a BA15s bayonet base, a single-contact fitting common in rear lighting applications.
The P21W also conforms to the ECE standard, placing it within the same regulatory framework as the H8 and H11 bulbs used in the front fog positions of the Volvo C30.