H.I.D. , short for High Intensity Discharge, is a lighting technology that uses a xenon gas charged bulb in combination with an electronic ballast to regulate the current going through it. The resulting light can be up to three times brighter than traditional halogen bulbs. Also, by producing certain temperatures, HID Conversion Kits can reliably produce truer colored light, more consistently without fading out like coated bulbs do.


Usually, HID lighting is only available on high end luxury cars, but with a TD HID Conversion Kit, you can convert your stock halogens to super bright HID lighting too. By just connecting a few plug and play connections and then mounting the ballast in a secure spot, you can experience supreme brightness in a high expanded field of vision. Also, unlike cheaper HID systems on the market, our TD HID systems are backed by a full one year warranty.

The HID System offered on this page are designed to specifically fit a Audi A4 produced during the following model years: 2000, 2001. Please also note any specific model notes on the product title at the top of the page.

While it may fit other vehicles, Please try the vehicle search on the center of our main page. or email us if you have any questions.