Volvo XC70 front fog light bulbs use H8, H3, or H1 sizes depending on production year, while rear fog light bulbs use P21W size. The replacement chart covers 2003 through 2016 model 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 XC70 front fog light uses the H8 bulb across the 2007-2016 model years. The H8 is a single-filament halogen bulb rated at 12V and 35W, fitted with a PGJ19-1 base, and built to ECE standards with approval also recognized in the United States.
The 2006 Volvo XC70 front fog light takes an H3 bulb, which differs from both the earlier H1 and the later H8 fitments. The H3 uses a PK22s base and operates at 12V, 55W.
The 2003-2005 model years use an H1 bulb for the front fog light. The H1 is a single-filament halogen bulb with a P14.5s base, rated at 12V and 55W, and holds ECE approval as well as recognition in the United States and Japan.
The front fog light specification for the Volvo XC70 reflects three distinct bulb types across its production run, meaning H1, H3, and H8 bulbs are not interchangeable with one another despite all being single-filament halogen types. Each uses a different base design, which physically prevents cross-fitment.
The H8 and H3 share the same 12V operating voltage but differ in wattage, with the H8 rated at 35W and the H3 at 55W. This difference in power draw is relevant when replacing or upgrading fog light assemblies on the XC70.
The H1 and H3 bulbs both operate at 12V and 55W, making their electrical characteristics identical, but their base types differ. The H1 uses a P14.5s base while the H3 uses a PK22s base, so they are not physically interchangeable.
The rear fog light on the Volvo XC70 uses the P21W bulb for the 2003-2007 model years. The P21W is a single-filament signalling bulb with a BA15s bayonet base, rated at 12V and 21W, conforming to ECE standards.
The BA15s bayonet base of the P21W is a single-contact design. This base type is common in signalling applications and is distinct from the pin and wedge bases found on the front fog light bulbs used in the XC70.
All four bulb types specified for the Volvo XC70 fog lights conform to ECE standards, indicating suitability for markets in Europe and other regions that recognize ECE regulations, with the H1, H3, and H8 also carrying approval for the United States.
The rear fog light specification covers only the 2003-2007 model years, while the front fog light specification extends through 2016, reflecting a difference in the range of years covered between the two sub-parts.