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The RCP D4S6 Xenon HID bulbs deliver a powerful 3200 lumen output at 6000K diamond white light, offering 3x the brightness of halogen bulbs. Designed with premium anti-UV quartz glass and IP68 waterproofing, these 35W bulbs ensure a long 3000-hour lifespan and superior durability. Compatible with D4S/D4R lamp optics, they provide a plug-and-play upgrade that enhances nighttime driving safety and style.






| Brand | RCP |
| Brightness | 3200 Lumen |
| Item Package Quantity | 1 |
| Color | 6000K |
| Auto Part Position | Front |
| Operating Life | 3000 Hours |
| Light Output Maximum | 3200 Lumens |
| Manufacturer | RCP |
| OEM Part Number | 66440, 66440CBI, 42402, 42402C1, 42402CX, 42402XV, ect. |
| UPC | 712994089717 |
| Item Weight | 5.6 ounces |
| Package Dimensions | 4.8 x 3.62 x 2.36 inches |
| Item model number | V4-D4S6 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | V4-D4S6 |
| Mirror Lighting Type | automotive-exterior-headlight-bulbs |
| Voltage | 12 Volts |
A**A
great bulb option at a great price point
very happy with the light output and color of the bulbs. very bright and fit perfectly. installation was easy once i was able to get my headlights out a little for clearance. but that is b/c of my car.
A**N
Cheap and works!
I have a 2014 Mazda CX-5. They have history of having headlight ballast issues. My passenger side headlight was not working, low or high beam. I ordered these cheap ones in the case I was having a ballast system issue. It turned out to just be the bulb but for the price they are bright and white to where they actually match the color of my LED fog lights. Excellent value and will eventually order some brighter ones in the long run, but I am completely happy with these for now.
T**E
Wonderful
Perfect price and great product
A**G
Good but not good enough
The color temperature is perfect, but the brightness isn't as good. I ended up returning these after a couple of nights of testing.
K**9
A great replacement bulb for my 2011 Lexus GS350
It fits my 2011 Lexus GS350 perfectly. These bulbs are the fraction of the cost. The bulbs come with white glove for installation. I highly recommend to buy them!
X**H
Very bad life span. Only lasted 3 months.
I got these bulbs in August 2025 by January 2026 they burst and went out. I'd reccomend looking somewhere else and save your money.
S**H
So far so good.
These seem to be working very well in my 2 gen Prius. Even after I bought the original Phillips brand. Hopefully, they will last. New one is on the left old one is on the right. The little white mass is what I believe indicates bulbs are going bad. Both bulbs I pulled out had this and the new ones did not. These are good and bright but, not overly so.
K**L
If you just need a working light…. Here u go
The reviews that were great should post video proof. I only needed 1 bulb so the left side is RCR, the right side is stock. You can’t tell customers the bulb is brighter than stock because that’s what we will look for. I rated a 3 because the bulb actually works, and the beam pattern is good. However, brighter than stock no, nor does it reach out further than stock either. I will keep this bulb until I find a product that is 5stars but in all honesty I should return it. I mean it’s $20, what did I expect. It works I’ll be happy for now
Trustpilot
3 weeks ago
1 month ago