Osram D1S 66140CB Cool Blue HID Xenon Headlight Bulbs | Pack of 2

Excellent headlights. They took a little time to reach their final color, but after some use they look fantastic. Very clean white light.

I wanted something whiter than standard xenon without sacrificing visibility. These are a great balance. Bright white with just a slight cool tone.

Genuine quality product. Installation was straightforward and the bulbs fired up immediately. Very happy with the brightness and color.

Really pleased with the 5500K color. White enough to look modern while still providing strong road illumination.

Great replacement for worn-out factory xenons. The increased whiteness is obvious as soon as it gets dark.

Installed several months ago and they still look excellent. No noticeable color shift between the bulbs.

These gave me the modern headlight appearance I was looking for without converting the car to LEDs.

Bright and evenly matched. The beam pattern remained exactly like factory, just with a noticeably whiter color.

Very clean white output once fully warmed up. Much better appearance than my old yellowing HID bulbs.

I have tried several D1S brands and these have been my favorite for color consistency and overall quality.

Great combination of appearance and performance. I especially like the color on dry roads and highways.

Easy direct replacement for my D1S setup. No errors and both bulbs have performed perfectly.

Noticeably whiter than my original xenon bulbs. The color looks premium without having an aftermarket appearance.

The Cool Blue name made me expect a very blue bulb, but these are actually a nice bright white. Looks great.

Excellent upgrade for my factory HID system. Crisp white light and plenty of usable illumination at night.

Installed these as a pair and I’m glad I did. Both headlights now have exactly the same brightness and color.

Perfect if you want something between factory 4300K and the very blue 6000K+ aftermarket look.

Genuine quality compared with generic HID bulbs. Smooth startup, stable output and a very consistent beam.

The color is almost pure white from the driver’s seat with a slight cool tint from certain angles. Very nice.

My factory xenons were getting dim and yellow. These made the car look several years newer at night.

Good color match between the two bulbs and excellent brightness. They look great after warming up.

Very happy with the upgrade. Road signs reflect clearly and the headlights have a sharp, modern appearance.

Nice bright white color. Not nearly as blue as some higher Kelvin bulbs I’ve tried, which is exactly what I wanted.

Replaced a cheap set of aftermarket bulbs with these OSRAMs. The difference in quality and light output was immediately noticeable.

Excellent xenon bulbs. The 5500K output gives my headlights a newer LED-like appearance while retaining HID performance.

Both bulbs have consistent color and brightness. No flickering or startup problems so far.

I wanted something whiter than 4300K but still useful for nighttime driving. These are a very good balance.

Much cleaner color than my old D1S bulbs. They look especially good in projector headlights.

Installation was straightforward and the bulbs fired right up. Nice upgrade in both appearance and visibility.

Exactly the color I wanted. Crisp white light with just enough blue to distinguish it from standard OEM xenon.

Replaced both aging HID bulbs with these. The headlights look completely refreshed and both sides match perfectly.

Very impressed with these bulbs. Bright output and noticeably whiter than the factory xenons without looking excessively blue.

Great upgrade from my original D1S bulbs. The 5500K color is a clean white with a subtle cool tone and looks much more modern.