H4 Bulbs - H4 HALOGEN BULBS H4 bulbs can replace 9003 bulbs Quality made to industry standards For uniform brightness and optimum performance, we recommend replacing your bulbs in pairs For off-road use only except (A) which meet DOT requirements. Bulb Care: Do not handle the glass part of a halogen bulb. The oil from your hands or any other residue on the glass can cause the bulb to burn out prematurely. If you accidentally touch the glass, clean it immediately with isopropyl alcohol and a lint-free cloth. Watts indicated for High Beam/Low Beam. Applications: All Makes All Models