When you find your BMW E46 OEM xenon headlight assembly can light on, but the light output become terrible and very poor, a lot of friends will determine the problem is located at the xenon bulb. After they change with new bulb, they will find the effect still not ideal. Some of them change the bulb to be high color temperature like 6000K or 8000K （If you use aftermarket bulb, because the parameter is not match well with original ballast, after time went, it will easy to make the original ballast fail. Then because of choosing cheap aftermarket bulb, and make the ballast failed in short time, you will cost a lot of more money to buy original OEM parts. Also this will waste time and energy too. ）But finally still can not improve the light output.

Some friends maybe know xenon headlight a little, they will try to change the xenon ignitor or ballast. Because they think maybe because of the output voltage not enough makes the light output become dim. But finally still can not solve the problem.

Now let me explain with you why your type of car have this kind of problem.

The BMW 3 Series E46 headlights of these cars were built by two different headlight manufacturers. One manufacturer is AL Bosch , also known as AL (Automotive Lighting). The other is the Austrian manufacturer ZKW.

There are a lot of BMW E46 car owners emails us and tell us they have the same problem. Last few years, I ever got some good condition reflect bowl for them.

如果你的是AL Bosch 的大灯总成，那么恭喜你，你可以直接对反光碗进行更换，不需要跟ZKW那样进行有定的固定修改动作。

You only need to take out the original burnt out projector; swap with the projectors we supply you and fix them well is ok.

This headlight repair kit has become the most popular way to fix old toasted E46 AL Bosch headlights. Don't spend buy used ones that will undoubtedly have the same issue or bother spending thousands with the dealership. For the few hours in the garage you'll spend doing the install, your car light output will be totally recover, and will be even better than your original new car’s output.