W221 Lightbulb guide (Might be useful) Taken from sylvania.com
The part numbers here aren't necessarily proprietary to sylvania, just the letter additions at the end like XV, CB, or ST. Read the notes.
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W221 MERCEDES-BENZ S-class
Low beam headlamp
HID-D1S
High beam headlamp
H7
H7SU Silverstar ULTRA for Ultra Night Vision - The Whitest and Brightest Halogen
H7ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
H7XV XtraVision Halogen - The Brighter Light
H7CB Cool Blue Halogen - The Whiter Light
Parking light
2825
2825LL Long Life Upgrade: Up to twice the life of the standard lamp
Front turn signal
5200
Rear turn signal
12271NA
Tail light
LED
Stop light
LED
High mount stop light
LED
Fog/Driving light
H11
H11XV XtraVision Halogen - The Brighter Light
License plate
2825
2825LL Long Life Upgrade: Up to twice the life of the standard lamp
Front sidemarker
2825
2825LL Long Life Upgrade: Up to twice the life of the standard lamp
Rear sidemarker
LED
Map light
64132
Dome light
2886X
6486X
Step/Courtesy light
2825
2825LL Long Life Upgrade: Up to twice the life of the standard lamp
Trunk/Cargo area
2825
2825LL Long Life Upgrade: Up to twice the life of the standard lamp
EDIT:
I forgot to mention that if you are trying to replace any of the 2825 bulbs, you might have better luck looking up type-194 instead. This seems to be the exact same bulb, but different part number and more common.
Last edited by itschase; Apr 29, 2009 at 03:05 AM. Reason: Forgot to add information.



