oIf you have a projector-based headlight setup, the single most important component you can choose is the bulb that sits inside it. We get asked constantly which D2S HID bulbs are worth the money, and the honest answer is that it depends on your goals, your budget, and how picky you are about color and precision. In this guide we break down the full lineup we stock and have installed countless times: the Morimoto 3IFVE (35W), the Morimoto 5FIVE (55W), the Morimoto XB35, the Philips 85122, and the two Osram options, the 66240 SVS and the CBI. We tested these, we packaged them, and we service the warranty claims, so this comparison comes straight from the workbench.
Why the Bulb Matters More Than You Think
A projector can only work with the light source you feed it. Capsule alignment, glass quality, and the mixture of halide salts all determine how sharp your cutoff is, how much usable light hits the road, and how long the bulb holds its color before shifting. Cheap bulbs with sloppy capsule placement will scatter light, blur the cutoff, and disappoint you no matter how good your projector is. That is why we spend so much time talking about the difference between a $20 mystery bulb and a genuine, precisely built lamp.
Before you decide between xenon and the newer LED options, it is worth reading our HID vs LED D2S comparison guide to understand which technology fits your projector. For this article, we are focusing purely on the HID side and the specific D2S bulbs we trust.
Morimoto 3IFVE (35W): The Best Value D2S
The Morimoto 35W D2S bulbs are perfect for anyone who wants high-end quality at a more reasonable price than the OEM lamps. What makes them so popular is the range of color options. There is a 3IFVE for every taste: a golden yellow 3000K, an OEM HID colored 4300K, a pure white 5000K, and a slightly blue 6000K. That spread lets you dial in exactly the look you want without giving up performance.
These bulbs use a precisely set capsule through an updated hollow alignment frame at the base, a quartz glass shell, and plentiful halide salts. Together those elements give the performance our customers demand. Believe it or not, proportionately we service fewer warranty claims on these than on the more expensive OE bulbs. They are compatible with nearly every projector we sell, come standard in many of our full kits, and pack the most bang for the buck, which is why the Morimoto 35s are the best-selling D2S bulb from The Retrofit Source.
Morimoto 5FIVE (55W): More Light, Built for High Output Ballasts
If you plan to run high output ballasts, the Morimoto 5FIVE is the bulb designed for that job. This special 55W version has a thicker quartz glass capsule and beefed up electrodes compared to the 35W version, which lets it make more light and handle high output ballasts safely and reliably.
The 55W Morimoto 5FIVE features a thicker capsule and beefed up electrodes for higher output.
The 5FIVE comes in a Kelvin to suit every taste, whether you are seeking a 4300K warm white, a 5000K pure white, or a slightly blue 6000K. Like the 35W version, these are compatible with nearly every projector we sell and come standard in many of our full kits. If your priority is maximum output within the HID family and you have the ballasts to support it, this is the Morimoto we point you toward.
Morimoto XB35: Modern Materials and Precision Alignment
New for 2013, the Morimoto XB35 is composed of the best materials and produced using the latest techniques available in the aftermarket. The standout feature is its special double wide quartz outer shell that filters harmful UV, and its bulbous shape surrounding the capsule. Because of that shape, the XB35 spreads its light more effectively than a straight tube bulb.
Precision is where the XB35 really shines. Each one is hand built using a high precision jig and individually tested for proper alignment, guaranteed to be within plus or minus 1/10th of a millimeter from 90 degrees rising from the base. That combination gives you the most modern base structure, the best quality electrics, a resilient mixture of halide salts, and advanced inner and outer glass. If you are usually an OEM or nothing kind of person but do not want to spend $200 on a set of Osram CBI bulbs, the XB35 offers the same level of quality, compatibility, and precision as an Osram CBI or Philips option, but with more Kelvin options, a longer warranty, and at half the price.
You can see the full range at the Morimoto XB35 D2S HID bulbs (3000K-6500K) listing, and for a manufacturer perspective, Morimoto’s own D2S XB35 bulb listing covers the construction details as well.
Philips 85122: The Industry Standard
The Philips 85122 is the industry standard by which all other D2S bulbs are measured. It is original equipment in many modern luxury cars and it is good enough to please just about anyone. As our best-selling OEM D2S bulb, the Philips D2S series offers a great mix of lumens, precision, and longevity.
The 85122 Plus bulbs are known for retaining their intensity for years and resisting color shifting, so they stay in a like-new state longer. Note that Philips has discontinued the “Plus” from this bulb’s part number, so depending on the manufacturing date of the bulbs you receive, they may or may not show that suffix. Here is the part that surprises most people: compared to a dealership list price of $194 per bulb, we offer them for a much more reasonable $95 per pair. Considering their service life, that is a great deal on a genuine OEM lamp.
Osram 66240 SVS: The Newer 4300K Benchmark
Over 5 years ago Philips released the 85122 Plus, and as great as it is, it is old news now that Osram’s latest 4300K competitor is out. The Osram 66240 SilverStar (SVS) offers even more lumens than those once industry standard Philips 85122 Plus 4300K bulbs at the same Kelvin rating and wattage.
These are a technical marvel, and everybody who uses them agrees they are among the best D2S bulbs ever made. Not once has a customer requested a return because they did not think the bulbs were worth the money. Do not just take our word for it, the reviews on HID Planet back this up. We are proud to offer these bulbs in their original retail packaging from Osram.
Osram CBI: The Rolls-Royce of D2S Lamps
The Osram CBI (Cool Blue Intense) bulbs are, in our view, the best D2S bulbs to ever hit the market. They are the Rolls-Royce of D2S lamps. What makes them so amazing? The CBI bulbs offer more lumens than the once industry standard Philips 85122 Plus 4300K bulb, but with a higher Kelvin rating of 5000K.
That means they are physically brighter and offer more contrast at night, which makes them seem even brighter than they already are. Make the most of any xenon or bi-xenon projector retrofit with these bulbs and their unmatched precision and output. We have never had anybody request a return because they were not worth the extra money. If you want to run these in a complete system, take a look at our D2S OEM HID System with Osram CBI option. For another take on a full OEM system, Headlight Revolution’s D2S OEM HID System is also worth a look.
Buy Genuine: The Counterfeit Problem
Here is a warning we cannot stress enough. It is estimated that 80 percent of these Philips and Osram bulbs sold through outlets such as eBay or Amazon are fakes. Counterfeits look convincing on the outside but fall apart on performance, color accuracy, and lifespan. The Retrofit Source prides itself on being one of the last few distributors shipping genuine Philips and Osram lamps in the US, and we ship them in their original retail packaging.
If you are paying premium money for a premium OEM lamp, buying from a trusted distributor is the only way to be sure you are getting what you paid for. Paying for a real Osram or Philips and receiving a fake is the most expensive mistake we see people make.
Which D2S HID Bulb Should You Choose?
For most people, the Morimoto 3IFVE 35W is the smart pick thanks to its color options, low warranty claim rate, and value. Dou run high output ballasts, step up to the 5FIVE 55W. If you want modern materials and tight precision without OEM pricing, the XB35 is the sweet spot. If you insist on genuine OEM lamps, the Philips 85122 is the proven standard, the Osram 66240 SVS is the newer 4300K benchmark, and the Osram CBI is the top of the heap at 5000K. Every one of these is compatible with nearly every projector we sell, so match the bulb to your budget and your color preference and you will be happy.
Frequently Asked Questions
What Kelvin options are available for the Morimoto 3IFVE D2S bulbs?
The Morimoto 3IFVE (35W) D2S bulbs are available in 3000K golden yellow, 4300K OEM HID color, 5000K pure white, and 6000K with a slight blue tinge.
How is the Morimoto 5FIVE different from the 3IFVE bulb?
The 5FIVE is a 55W bulb with a thicker quartz glass capsule and beefed up electrodes compared to the 35W version, letting it handle high output ballasts safely while offering 4300K, 5000K, and 6000K options.
What makes the Morimoto XB35 different from a standard D2S bulb?
Introduced in 2013, the XB35 uses a double wide quartz outer shell that filters UV and its bulbous shape spreads light more effectively than a straight tube bulb. Each bulb is hand built and tested to be within plus or minus 1/10th of a millimeter of proper 90 degree alignment.
How does the Osram 66240 SVS compare to the Philips 85122 Plus?
The Osram 66240 SVS offers even more lumens than the Philips 85122 Plus at the same 4300K rating and wattage, making it a newer, higher output alternative to the once industry standard Philips bulb.
Why buy genuine Philips or Osram bulbs from The Retrofit Source instead of eBay or Amazon?
The transcript notes that an estimated 80 percent of Philips and Osram D2S bulbs sold through outlets like eBay or Amazon are counterfeit, and The Retrofit Source is one of the last few distributors shipping genuine Philips and Osram lamps in original retail packaging.
Meet the Experts Behind The Retrofit Source
Tyler Jordan – Technical Writer
Tyler works directly with the TRS product R&D team, bringing over a decade of automotive aftermarket lighting experience to every article. An avid enthusiast with hundreds of personal installations under his belt, his content is built on hands-on knowledge from the workbench, not spec sheets.
Caleb Morgan – Marketing Manager
Caleb brings over a decade of automotive lighting industry experience and works with TRS customers daily on the front lines. With hundreds of personal lighting installations and a direct feedback loop from real buyers, his content addresses the questions and problems that actually matter.
