Volvo S60 front fog light bulbs utilize H1 and H3 sizes, while rear fog light bulbs use H21W and P21W sizes. The replacement chart covers 2001 through 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 H1 bulb is the most widely used front fog light type across the Volvo S60 generation covered by these specifications, fitting the 2001-2004 and 2006-2009 model years.
The H1 is a single-filament halogen bulb rated at 12V and 55W, built to ECE standards with a P14.5s base, and holds approval in the US and Japan in addition to Europe and worldwide markets.
The Volvo S60 (2005) front fog light departs from the H1 fitment used in surrounding years, instead requiring an H3 bulb.
Although the H3 shares the same 12V, 55W halogen rating as the H1 and also carries ECE approval across the same regions, it uses a PK22s base rather than a P14.5s base, making the two types physically incompatible with each other.
The rear fog light specifications span two distinct bulb types across the model years listed, with P21W covering 2001-2009 and H21W covering 2011-2016.
Both the P21W and H21W are single-filament signalling bulbs rated at 12V and 21W under ECE standards, but they use different bases and are not interchangeable.
The P21W uses a BA15s bayonet base, which is a single-contact bayonet fitting widely found in automotive signalling applications.
The H21W uses a BAY9s base, an offset-pin bayonet fitting that physically prevents incorrect installation of a P21W in a socket designed for the H21W.
The front fog light specifications cover only the 2001-2009 model years, while the rear fog light specifications extend through 2016, reflecting different production or platform timelines for each lamp position.
No front fog light entry exists for 2010 in the specifications, whereas the rear fog light data shows a gap between 2009 and 2011, with no 2010 entry listed for either position.