Volvo V70 front fog light bulbs utilize H8, H1, and H3 sizes, while rear fog light bulbs use P21/4W and 1156 sizes. The replacement chart covers 1998 to 2010 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 V70 front fog light uses three distinct bulb types across its model years: H1, H3, and H8, all of which are single-filament halogen bulbs operating at 12V and conforming to ECE standards recognized in Europe and worldwide.
The H8 bulb, rated at 35W with a PGJ19-1 base, is the specified front fog light fitment for the Volvo V70 from 2007-2010.
The H1 bulb carries a 55W rating and uses a P14.5s base. It is the specified front fog light fitment for the V70 across 1998-2004 and again in 2006, making it the most frequently recurring front fog light bulb type in these specifications.
The H3 bulb shares the same 12V, 55W electrical rating as the H1 but uses a PK22s base, making the two types physically non-interchangeable despite their identical wattage. The H3 is specified solely for the 2005 V70 front fog light.
H1 and H3 bulbs share approval across ECE, US, and Japanese markets, while the H8 holds ECE and US approval. The differing base types across H1, H3, and H8 mean none of these three bulbs are interchangeable with one another.
The V70 rear fog light specifications reference two bulb types: P21/4W and 1156. Both operate at 12V and use a bayonet-style base, though they belong to different standards bodies and are not interchangeable.
The P21/4W is a dual-filament signalling bulb rated at 21W and 4W across its two filaments, using a BAZ15d bayonet base. It conforms to ECE standards and is the specified rear fog light bulb for the V70 from 2001-2007.
The 1156 bulb is a single-filament type rated at 21W with a BA15s bayonet base, conforming to ANSI standards used in the US and Canada. It is specified for the V70 rear fog light from 1998-2000.
Although the P21/4W and 1156 bulbs share a similar wattage figure on one filament, their base types differ: BAZ15d versus BA15s. These bases are physically distinct, and the two bulbs are not interchangeable.
The rear fog light specification for the V70 reflects a shift between 2000 and 2001, moving from the ANSI-standard 1156 to the ECE-standard P21/4W, which also introduces a second filament not present in the 1156.