SEALIGHT D4S LED Bulbs, 6000K Cool White for HID Assembly, HID Bulbs Replace 66440 42402 42402WX (‎42402C1) with 14000RPM Cooling Fan Fog Light Bulbs, Pack of 2

Purchased the D3S bulbs to replace a 10 year old set of HID bulbs in my 2016 Volvo V60. The bulbs retain the same beam pattern as stock, but has a small dark spot below the hot spot. Which isn't too big of a deal, as a bright spot right in front of your car would be distracting. But it does add a ton of light right around the cutoff line, which is exactly how it should be. I did not get a comparison picture of the high beam pattern, but that is also much improved.The overall bulb assembly feels very high quality and weighty. The bulb fit perfectly in place, but was a bit difficult to slip onto some of the metal aligning fingers. I was able to make it slip over the fingers much easier by helping them with a small flathead screwdriver. It is very secure in the fingers and the locking ring made it even more secure.The only issue I found was the electrical receptical on the bulb doesn't have any holes for the locking tab of the connector to click into, it does feel like it's plenty secure in the receptical. I will add a zip tie through one of the fins and around the connector, if the connector does ever vibrate out in the future. The bulbs do not cause any canbus errors, although I don't see them ever causing any.I have purchased Sealight products before and had good experience with them. I have a pair of X2 H11 LED bulbs in my 2019 Civic, that I bought in 2020, that still work perfectly. So I fully expect these bulbs to surpass the life of any HID bulb I would have installed. But I will update if they suddenly have problems.

Headlights bright and have lasted me for a while now. Also they weren’t too expensive and just a way better and brighter output than stock lights in 2017 Ford Mustang. Would highly recommend. No issues whatsoever.

Great value

Update to review. Got the replacement, reaslized my lock tab on my car cable wasn't ingaged in the clip ocrrectly, so problem was mine, not the product. Installed clip properly, returning the unusedreplacement bulbs. .Returning this for a replacement, One of the clips is defective, keys the cable from teh car to the light keep disconncting. Easy installation, lights work fine, although they aren't really any brighter than my original 3800 limen lights. Just whiter

Very Bright, OME FIT. Just a pain to get to old ones out to remove for dodge challenger 2020 definitely search videos for installing.

Poor description of these they say 6k light color and they are no where near that I had to buy from someone else and they are better (sad thing is I have bought from sealight a few times never an issue until now)

Rarely does a product come along that transcends its functional purpose and becomes something transformative. This headlight bulb is not just a tool—it’s an experience.The moment I installed it, I knew my night drives would never be the same. The beam it produces isn’t just bright; it’s luminous, turning the inky blackness of the road into a crystal-clear panorama of light and life. It’s as though the stars themselves have descended to illuminate my path.Driving at night has always been a necessity, sometimes even a chore. But with this bulb, it’s become a joy. Suddenly, the mundane becomes extraordinary. The headlights cast a glow so pure and vivid that it brings out details I’ve never noticed before—the shimmer of dew on grass, the subtle texture of asphalt, the graceful movement of animals in the distance. It’s as if the world is unveiling its hidden beauty for the first time.The light not only enhances safety with its unparalleled clarity but also evokes a sense of wonder. Long drives that once seemed tedious now feel like adventures. Every journey feels like a starlit escape into a world of awe and serenity.This headlight bulb didn’t just change how I see the road; it changed how I see the world. If you’ve ever felt hesitant about driving at night or wished for a clearer, more magical view of the journey ahead, this is the answer.It’s more than a headlight—it’s a revelation.

Truly Plug & Play on a 2007 Corvette - unplugged the old HID bulb … removed the mounting plate - put the mounting plate on the new Sealight - plugged the LED bulb in - slid the bulb in - tightened it up & bata boom bata bing LED light …