X2 SERIES LED PERFORMANCE BULB FOR H4 - SINGLE

For upgrading your factory headlight bulbs to LEDs Upgrade optical design for defined cut-line and long-range illumination on the road. Powerful LEDs provide 3 times light output than stock halogen bulbs. Unique fan design to allow maximum airflow for best cooling effect. Compatible with most projector applications. Due to the fan cooling design, please avoid using in fog light applications without dust covers.