D2S: Osram Xenarc 66240 Nightbreaker


10 or more





Add to Cart

Product Details

The Best: Over 5 years ago, Philips released the 85122+, and as great of a bulb as it is - it's old news now that Osram's latest 4200K competitor, the 66240 Nightbreaker is on the scene. With a similar 4300K output but considerably more intensity - if you don't mind the price, you'll surely be satisfied with the extra performance!

Brightest: What makes them so amazing? Osram touts their Nightbreaker D2S bulbs as having "up to 70% more light" output compared to traditional OEM D2S bulbs. How this is possible we have no clue, but what we can tell you is that they're bright, really, really bright. A technical marvel indeed!

Backed: Bottom line? Everybody who uses them agrees they're among the best D2S bulbs ever made. We've never heard a customer complain that their Osram's weren't worth the money, and most of the guys here at TRS use these or the CBI in our own vehicles. No matter the preference, we have your Osram HID replacement bulbs!

Genuine: The Retrofit Source is proud to offer these bulbs in their original retail packaging from Osram. We pride ourselves on being one of the last few distributors shipping genuine Philips & Osram lamps in the US. It is estimated that 80% of these bulbs sold through outlets such as eBay or Amazon are fakes.

Overview Video: Check out this helpful video to see how the Osram bulbs compare.

Trusted: For more than a decade, we've worked hard to earn our killer reputation. Car guys world-wide know that TRS carries the internet's best selection of high performance automotive and powersport lighting products at the best prices, and we've got the best, most knowledgeable team of real enthusiasts to help back it up. If we sell it, then you bet we've put it to the test on our own cars, trucks, and bikes. Need a recommendation on parts for your project? Got a tech question? Wholesale inquiry? Contact Us

Product Specs

  • What's Included

  • BULBS: 2x Osram 66240 NightBreaker

  • WARRANTY: 2 Years

  • MISC: Alcohol pads (to clean bulbs before use)

  • Compatibility


  • OSRAM PART #: 66040 / 66240

  • PHILIPS PART #: 85122 / 85122+ / 85122C1 / 85122WX

  • BMW PART #: 63 21 7 160 806 / 63217160806

  • AUDI PART #: N 104 457 01 / N10445701

  • LEXUS PART #: 909812002

  • MERCEDES-BENZ PART #: 910139-000001 / 910139000001

  • NOT SURE: Find my size!

  • Tech Specs



  • RATED LIFESPAN: 2000 Hours

  • KELVIN RATING: 4200K (warm white)

  • LUMINOSITY: 3500 (estimated)

In Action

Product Reviews

5 out of 5 stars

Way better than OEM

Jeffrey Wright Reviewed: 03.14.2018

They have to somewhat better distance/lumen that the OEMs, simply because I get brighted by cars coming toward far more often since the switch. I do a lot of distance driving and I could see a bit farther than before. Color of the light wish it was a slight higher K other wise very happy with the switch, minus having to take off the bumper to get at passenger one on 13 Acura TL.

5 out of 5 stars

great bulb

steven inouye Reviewed: 04.01.2017

they are very bright but I think you really need the 50w ballast to see the difference

5 out of 5 stars

The Best!

Avery Horn Reviewed: 02.03.2017

I replaced my Philips 85122 with the NBs, and there is definitely a difference. These are brighter and have a better beam pattern. They are about the same color wise, but I expect them to get a little whiter (they started out very yellow). Overall I'm very satisfied. If you like the cool white look/appearance, these are not for you, but if you want performance, you won't regret buying the NightBreakers!

5 out of 5 stars

Excellent Output!

Haroon Reviewed: 11.28.2015

Worth the extra, after using CBI's for a year, I felt I was losing output and needed something a bit brighter. The CBI's looked fantastic however from a performance stand point, the Nightbreakers were literally a night and day difference. When I switched to the Nightbreakers, I instantly felt a difference, the beam was much brighter and yes there was some yellow'ness in the light pattern, the output was still far superior to that of the CBI's. If you want to upgrade purely based on aesthetics then get the CBI's, for output performance upgrade it is worth the extra to upgrade to the Nightbreakers.

5 out of 5 stars

Osram 66240XNB = Two thumbs up

Jonah Reviewed: 08.03.2015

I have been using different bulbs in my retrofits since 2007 and these are by far the best bulbs I've used. They are very bright; white with a hint of yellow. Its not nearly as yellow as the 85122+ and looking at the projector it is white whereas the 85122+ looks yellow. On the road, no matter the weather, these cut through the darkness/elements much better than any of the bulbs I've used before. I'll be buying another set for my other car.

5 out of 5 stars

Better then stock

Joseph Reviewed: 11.10.2014

Incredible light output with the nightbreakers. I don't even need to use my fog lights when it is foggy, raining out, they light up the entire area. Best HID's I have ever seen, worth the money. Replaced my stock HID's on my Acura TL.

5 out of 5 stars


Paul Reviewed: 07.19.2014

It's like the popular CBI but with a warmer colour and slightly higher output. Really helps with seeing colours/contrast at night and it's less eye strain than a higher colour temp bulb.

Warm white light, very much like an OEM look with higher output.

Also Purchased