The Mercedes-Benz E63 AMG parking light utilizes 12961 and 2357NA bulb sizes for the exterior lighting system. Data for the specific components covers the range from 2007 through 2012.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. The T10 form factor is a small single-filament bulb widely used in low-intensity automotive lighting positions such as parking lights and side markers.
The Mercedes-Benz E63 AMG uses the 12961 bulb for the front parking light across the 2007-2013 model years, making it the dominant bulb type in these specifications.
The 2357NA is an ANSI-standard bulb used in the United States and Canada. It features a BAY15d bayonet base and natural amber glass, with a dual-filament design rated at 12V and 26.9W on the high filament and 8W on the low filament.
The BAY15d base on the 2357NA is an offset-pin bayonet mount. The offset pin prevents incorrect installation by ensuring the bulb can only be seated in one orientation, which is necessary for dual-filament bulbs where each filament serves a distinct function.
The 2357NA applies specifically to the 2007 Mercedes-Benz E63 AMG front parking light position in configurations without the halogen capsule headlamp option. This is a notable departure from the 12961 used across all other listed years and configurations.
The 12961 and 2357NA are not interchangeable. They differ in base type, wattage, filament count, and glass color, meaning a direct substitution between the two would be incompatible with the socket and electrical circuit of the intended position.
For the 2007-2012 Mercedes-Benz E63 AMG equipped with halogen capsule headlamps, the front parking light uses the 12961 bulb. The 2007 model year without that headlamp configuration uses the 2357NA instead, indicating that headlamp type is a determining factor in bulb fitment for that year.
The natural amber glass of the 2357NA produces a yellow-tinted output without the use of a colored lens or coating on the bulb's exterior housing. This is a factory characteristic of the NA designation within the ANSI bulb classification system.
The 5W rating of the 12961 reflects its role as a low-draw parking light bulb, consistent with the minimal illumination requirements of a stationary position indicator rather than a primary lighting source.
The dual-filament design of the 2357NA, with its significant wattage difference between the two filaments, is typical of bulbs that serve combined functions in automotive lighting, such as parking and stop or turn signal duties within a single housing.