Bulbs : PIAA : H4 Bulb 110/100W
H4 Bulb 110/100W
PIAA has the developed the most advanced bulb manufacturing techniques in the world. Features include: high quality heat resistant glass tube, welded focus ring that assures proper positioning, a one piece filament post for proper support, a metal bond holding the glass tube securely, and increased diameter of post and filament for high vibration application. H-4 design with 110/100 watt capacity.