Key features

• •【Huge Improvement in Visibility】Forenner 9004 HB1 bulbs are equipped with Latest CSP chips which provide up to 800% brighter than halogen bulbs, offer you superb side & peripheral visibility.
• •【Easy Installation】All-in-one 9004 fog light bulbs. No bulky base, no external driver, no polarity features. Real 1:1 Size, smoothly fit into the vehicle's housing and factory sockets even with limited space in the housing.
• •【Perfect Beam Pattern】The 9004 light bulb precisely mimic the position of the original halogen filament with 0.039in ultra-thin chip spacing just the same light pattern as stock bulbs to focus down the road with no dark spots or scattered light. Not dazzling to oncoming drivers.
• •【60,000+ Hours Lifespan】With Top-graded aviation aluminum material, dual copper substrates, and 18000RPM silent turbofan help to dissipate the heat generated from the chips rapidly and effectively. Get rid of frequent replacement for halogens.
• •【Fit 99% of Vehicles】The built-in intelligent IC driver makes the 9004 HB1 fog light better compatible with 99% of vehicles' systems without error. Please note: Although CAN-bus Ready, some sensitive models may require an additional decoder to be installed. If so, get in touch with Forenner to get suitable decoders.