Saab 9000 front fog light bulbs use H3 size while rear fog light bulbs use P21W size. The replacement chart covers vehicle production spanning 1986 to 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Saab 9000 front fog light uses the H3 bulb across all listed model years, spanning 1986-1992 and 1997-1998.
The H3 is a single-filament halogen bulb operating at 12V and 55W, making it a relatively high-output lamp by halogen fog light standards.
The H3 bulb uses a PK22s base, a pinch-type connector that differs from the more common screw or bayonet bases found on other automotive bulb types.
The H3 is an ECE-standard bulb with approval for use in Europe, worldwide markets, the United States, and Japan, reflecting broad international compatibility.
The Saab 9000 rear fog light uses the P21W bulb, which is listed for the 1996-1998 model years.
The P21W is a single-filament signalling bulb rated at 12V and 21W, a wattage typical for rear fog and brake light applications.
The P21W uses a BA15s bayonet base, a single-contact fitting that is among the most widely standardized bases in automotive signalling lamps.
The P21W is also an ECE-standard bulb, placing it within the same European and international regulatory framework as the H3 used in the front fog position.
The front and rear fog positions on the Saab 9000 use bulbs with different base types, PK22s for the H3 and BA15s for the P21W, meaning the two bulbs are not interchangeable between positions.