I want to upgrade my headlights with phillips bulbs but I dont know which ones i need. D2R or D2S ???Its a 2003 Sedan anyone can help me
Also the bulb for the fog lights below the headlights????

 

you need D2R for headlights and 9003 for fog lights

for future reference..

http://www.sylvania.com/ConsumerProd...RG-Results.htm

has all the sizes for replacements for all the lights in your car in case you wanna change out LEDS and what not

 

+1

D2R are for reflectors and D2S are for projectors.

 

Can D2R and D2S be interchanged? I am assuming that one type cannot be plugged into the socket for the other type, is this true?

 

Not without modification, and D2S bulbs shouldn't be used anyways, it'll glare and blind other drivers

 

I love how people start giving suggestions without asking the most important question...

Does your car come equipped with XENON (HID) lights? If you have Halogen lights, non of those bulbs mentioned above will work. You will need an H1 bulb.

If your car is HID equipped, then D2R bulbs.