If your Kenworth T680 or Peterbilt 579/5 Series vehicle happens to have a D1S HID bulb, and you're planning to replace it, LOOK NO FURTHER..
A D1S HID bulb as pictured has a ballast and is a glass tube bulb filled with gas.
Our ND10 D Series replacement for the OSRAM D1S is an easy install. Plug - n - Play with no fault code showing.
Brighter than HIDs and positive ON-OFF operation. No dimming and waiting for it to light up.
ND10 D1S PRO LED IS A DAYWHITELED.COM EXCLUSIVE!