Alfa Romeo 166 (2003-2007) bi-xenon- Xenon headlights - Retrofitlab

Alfa Romeo 166 (2003-2007) bi-xenon- Xenon headlights

This Alfa Romeo 166 kit contains everything you need to swap your old, blacked-out projectors for powerful new bi-xenon projectors. Using the exact same mounting points, it makes retrofitting quick and easy. And, most importantly, it will take your 166 to the next level – just check out the test pictures! This is way beyond what the majority of OEM projectors can achieve.

The Mini D1S 3.0 is an incredibly bright bi-xenon projector, enabling you to use D1S OEM bulbs, including the most powerful options from Osram and Philips. You will literally outshine the competition. With available colour temperatures ranging from 4,300K to 6,000K, the crystal-clear 3.0-inch lens throws a wide low beam with a bright hotspot and sharp cutoff. As for the high beam? It’s like the sun.

You can use the ballasts that you’ve already got, simply leave them in place. A high beam splitter is also included, making for easy integration of the bi-xenon mechanism. Power supply is strong, steady and reliable.

Lastly, this kit provides every single part that you will need for retrofitting. In order to keep the price low, we have however assumed that you will keep your existing xenon bulbs. Depending on how old those are, you may want to also order a new set of bulbs to get the most out of your retrofitted system. Xenon bulbs do lose up to 70% of their maximum brightness over time.

This complete Alfa Romeo 166 retrofit kit is inspected by our internal quality control and comes with a solid 2-year warranty. It also includes highly rated technical support from your lighting experts at

Should you have any questions prior to purchase, please refer to our FAQ page or start a chat below. You can also download our free brightpaper on automotive lighting. Nothing beats making an educated decision!

We look forward to brightening your day (not to mention your night)

This is a very advanced retrofit; as opposed to most of our kits, this one does require ample experience to be installed. Discounting removal and replacement of the headlights, a skilled retrofitter could expect the job to take a full day.

Installation requires for the Alfa Romeo 166 headlights to be opened. This is easier said than done due to the rock-solid permaseal employed. You can look forward to several joyful hours, just opening the headlights. On the other hand, once you’ve succeeded doing so, installation of the new projectors, bulbs and ballasts is very straightforward. At the end of the day, we’re sure that you’ll agree that it was all worth the effort.

For detailed instructions, please refer to the fitting instructions PDF.

Want to have the kit installed by a professional? Check out list of installers

Professional retrofitting

This complete kit has been especially developed to enable retrofitting at home, saving you the cost of installation. However, should you prefer to have a professional carry out the retrofit, you can simply mail your headlights to the nearest participating workshop. They will then perform the retrofit and return the upgraded headlights to you, ready for use.

Please note that, for professional retrofits, you should order your Retrofitlab kit or parts directly from the workshop in question (it saves you money on shipping).

To find the nearest workshop, please refer to Professional retrofitting

Delivery info

From then, delivery is generally
within 2-10 days, depending
on your location.

14 days returns

Not the right fit? No worries!

2 year warranty

Quality comes first and our products are designed to last.



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