Headlamp bulbs should be replaced in pairs.  Why?  Bulb filaments are made of tungsten wire.  When the bulb is 'on' the filament heats up and becomes white hot producing light.  When the filament is white hot the atoms are moving very fast, so fast that they tear loose and leave the filament.  They deposit themselves on the surface of the cooler glass.  What this means is that over time the filament becomes thinner and thinner and will eventually fail, meanwhile the glass becomes coated on the inside with tungsten and therefore less light is able to pass through it so the bulb is less bright.  If one bulb has ceased to operate then it is at the end of this process and therefore the other bulb will be nearing this point and the light output will be reduced.  Replace the pair and keep the working bulb as a spare for emergencies. We usually have in stock bulb variations to fit Classic Subaru Impreza Headlamp, Bug Eye Subaru Impreza Headlamp, Hawk Eye Subaru Impreza Headlamp, Classic Forester Headlamp, Newage Forester Headlamp, Classic Legacy Headlamp and NewAge Legacy Headlamp

Image (for display purposes only)	Product details and price
H1               H4             H7 SUBARU BULB TYPES	First select your type of bulb from the options opposite H1     H4     H7 Then select the style of bulb you require from the options below.  Some bulbs are not available in some bulb types PRICES ARE PER PAIR INC VAT
VISION PLUS	Vision Plus+ Up to 50% more light on the road Up to 20 metres longer beam Better reflections from road signs Available in H1 £21.85 H4 £21.85 Fitting Service Available
BLUE VISION	Blue Vision 4000K Xenon Effect Quartz Glass & UV Blocked Blue Filter For Daylight Colour Temperature Available in H1 £25.30 H4 £25.30 H7 £33.00 Fitting Service Available
GT150 POWER2NIGHT	GT150 Power2Night Up to 50% more light on the road Blue Styling Longer beam Quartz Glass & UV Blocked Available in H4 £25.30 H7 £33.79 Fitting Service Available
X-TREME POWER             Click Pic to enlarge	Up to 80% more light than standard halogen.  The brightest bulbs you can legally use on the road Palladium Coated Head Chrome Coated Base Quartz Glass Available in H4 £25.89 H7 £34.50 Fitting Service Available