The Mercedes-Benz E320 front fog light uses H11, 9006, or H1 bulb sizes, while the rear fog light requires a 1156 bulb size. The replacement chart covers vehicle production years from 1994 to 2009 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 H11 bulb is the most frequently specified front fog light bulb across the Mercedes-Benz E320 model years covered, appearing in 2004, 2006, and 2008-2009. It is a single-filament halogen bulb rated at 12V and 55W, built to the ECE standard with a PGJ19-2 base, and carries approval for use in the US market as well.
The H1 bulb is the second most common front fog light specification, covering the Mercedes-Benz E320 from 1996 through 2002. Like the H11, it operates at 12V and 55W with a single filament, but uses a P14.5s base and holds ECE approval alongside US and Japanese market approval.
The 9006 bulb is specified for the front fog lights in 2003, 2005, and 2007. It shares the same 12V, 55W single-filament halogen construction as the H11 but uses a P22d base and is governed by the ANSI standard rather than the ECE standard, making it a North American specification bulb.
Although the H11 and 9006 share identical voltage and wattage ratings, their bases are physically different. The H11 uses a PGJ19-2 base while the 9006 uses a P22d base, meaning the two types are not interchangeable despite their similar electrical characteristics.
The H3 bulb is specified for the front fog lights in 1994-1995. It operates at 12V and 55W with a single filament and a PK22s base, conforming to the ECE standard with additional approval in the US and Japan.
The rear fog light across the E320 uses the 1156 bulb exclusively for all years in which a rear fog light is listed, covering 1995 through 2003. This bulb operates at 12V and 21W, a notably lower wattage than any of the front fog light bulbs specified for the same vehicle.
The 1156 bulb uses a BA15s bayonet base, which is a single-contact bayonet fitting governed by the ANSI standard. Its single-filament construction distinguishes it from the dual-filament 1157 bulb, with which it shares the same base style but is not electrically interchangeable.
The front fog light specifications for the E320 reflect a shift across model years among three distinct base types: PK22s in 1994-1995, P14.5s in 1996-2002, and then alternating between PGJ19-2 and P22d from 2003 onward. Each base type is unique to its respective bulb family and does not accept bulbs from the other groups.
All front fog light bulbs specified for the E320, regardless of year or standard, share a consistent 12V, 55W electrical rating. This uniformity in power draw contrasts with the rear fog light, which draws significantly less power at 21W.