You're very welcome. Might want to post in the right forum, or search the right forum, or open your owners manual, or Google it (plenty of lighting sites / companies have bulb finder tools online).
Any of the above would answer your question well. I honestly don't know which bulbs your model uses. Have you never changed a bulb in it?

Sorry I am new to this forum thing! Just an old guy who finally got a Benz!
I am reading a lot on this car and man it makes you scared to touch anything on it. I might mess something up that would cost big $ just by
changing a bulb! Will read more , Thanks

In that case, let me help you out. I figured you were just being lazy.

You aren't likely to mess anything up by changing a bulb - just be careful not to put stress on the wires.

You own a W202 - which is this forum: https://mbworld.org/forums/c-class-w202-27/

Your bulbs are listed here: http://www.sylvania.com/ConsumerProd...RG-Results.htm

You should be able to find Philips Crystal Vision bulbs in that size. Not sure if AZN Optics carries anything for your front parking lights though.

Thank you very much! my car is a slk230 1998. I will check the sylvania site out for crystal vision bulbs. Do you know if they will be better to see with or just better looking? thanks again for info!

Got it looks like these bulbs look better and have better vision
leaving for store now! thanks acr2001!

Initially I thought you meant you had 1998 C. SLK might take different bulbs - my links were for a 1998 C class. Hope you figured everything out.

Yes I found bulbs for mine on the web site you posted. Went to autozone today
and bought H7 HID zxe sylvania silverstar bulbs (white). Salesman said they are brightest
but will not last as long as regular replacement bulbs. I will put them in tomorrow
if my hand can fit to reach socket!

I have the Philips DiamondVision lights and I can't tell if they are dimmer than my stock, or if it's just less contrast due to the blue bias in color. They do look cool, but I'm going with the HID kit shortly; I want more light when I drive at night.

Just put Hid bulbs ( white) in my car and not a lot of difference seeing down the road.they look brighter when looking at car but not so much for seeing when driving. Also there is some scatter lite. I am going to leave them in for a little while to make sure i am not blinding anyone else and to
see if they are better in the rain.

Just for your knowledge, those bulbs you bought are NOT HID bulbs. They are HID-like bulbs, but still regular halogen bulbs. True HIDs will have higher lumen and kelvin options.

They said Hid on package but if not that is ok with me, as I bought
these then read so much bad about them blinding oncoming traffic
I was a little worried about that. I was looking for bulbs to see better with more than just good looks.

They advertise that on many of the particularly shady bulbs. If you didn't have to do wiring, they aren't HIDs.

you can try philip x-treme power

these bulbs seemed ok but still something not right at nite. So i looked again and passenger side lite is shooting down! The mirror part inside the lite is loose. maybe a loose screw or something. I will have to try to remove entire lite and see what is problem
Any hints on removal?