Saab 9-3 Fog Light Bulb Size

The Saab 9-3 fog light utilizes H3 and P21W bulb sizes depending on the specific production period for the vehicle. Available data covers the period from 1999 through 2007.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Fog Light

Years	Bulb Size
2008-2011	H8
2004-2007	H3
2003	P21W
1999-2002	H1
1999-2002	P21W

Bulb Specifications

Description	Bulb Size
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-1 base. Also approved in the US. 12V, 35W.	H8
ECE standard (Europe & worldwide). Single-filament halogen bulb with PK22s base. Also approved in the US and Japan. 12V, 55W.	H3
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.	P21W
ECE standard (Europe & worldwide). Single-filament halogen bulb with P14.5s base. Also approved in the US and Japan. 12V, 55W.	H1

Other Locations

Additional Notes

The Saab 9-3 front fog light specifications cover model years 1999 through 2011, with four distinct bulb types used across that span: H1, H3, H8, and P21W.
The H8 is a single-filament halogen bulb operating at 12V and 35W, fitted with a PGJ19-1 base. It meets ECE standards and carries approval for use in the United States. The Saab 9-3 uses this bulb in its front fog lights for the 2008-2011 model years.
The H3 is a single-filament halogen bulb operating at 12V and 55W, fitted with a PK22s base. It holds ECE approval as well as approval in the United States and Japan. It serves as the front fog light bulb for the 2004-2007 model years.
The H1 is a single-filament halogen bulb operating at 12V and 55W, fitted with a P14.5s base. Like the H3, it carries ECE, US, and Japanese approval. It appears in the front fog light position for the 1999-2002 model years alongside a second bulb type.
The P21W is a single-filament signalling bulb operating at 12V and 21W, fitted with a BA15s bayonet base. It meets ECE standards and is listed as a front fog light bulb for the 1999-2003 model years.
For the 1999-2002 model years, the specifications list both an H1 and a P21W for the front fog light position, indicating that two bulbs are associated with that assembly during those years.
The H3 and H1 share the same wattage rating of 55W, which is notably higher than the 35W rating of the H8 and the 21W rating of the P21W. Despite this shared wattage, the H3 and H1 use different base types and are not interchangeable with each other.
Each of the four bulb types uses a distinct base fitting: PGJ19-1 for the H8, PK22s for the H3, P14.5s for the H1, and BA15s for the P21W. These differing bases mean no two bulb types in these specifications are physically interchangeable.
The shift from H3 to H8 between the 2007 and 2008 model years represents a reduction in bulb wattage from 55W to 35W for the front fog light position on the Saab 9-3.
The P21W, classified as a signalling bulb rather than a halogen lamp, is the only non-halogen type among the four bulb sizes listed in these specifications.