H3 halogen bulb – Replacement and performance

The H3 halogen bulb is used for fog lights and additional long-range driving lights. It operates in 12V with a power of 55W. The H3 base, with its wire connector, is one of the oldest and remains popular on additional 4x4 lights. Check the reference on your original bulb or in the maintenance booklet. AGM Vision offers this reference in permanent stock, with vehicle compatibility sheets.

Replacing an H3 is accessible to everyone. Access the rear of the headlight from the engine compartment, disconnect the electrical connector, remove the cover and the fastening system (clip, ring or quarter-turn). Remove the worn bulb and insert the new one without touching the quartz glass with your fingers. Reassemble in the reverse order. The operation takes about 10 to 20 minutes per side. Change both bulbs simultaneously for uniform lighting.

Yes, the H3 xenon-effect bulb is available with a bluish treated glass that produces a white light between 5000K and 6000K, similar to xenon lighting. It keeps the same base, the same power and remains ECE-approved for road use. The rendering is more modern than the standard version at 3200K, yellow. The trade-off is a slight loss of brightness. AGM Vision offers the standard and xenon-effect versions for the H3.

A standard H3 bulb offers an average lifespan of 500 to 800 hours. Long-life versions reach 1200 to 1500 hours thanks to a reinforced filament. High-performance versions (+100%, +130%) generally last less long (300 to 500 hours), because the filament is more heavily stressed. Lifespan also depends on vehicle vibrations and the quality of the electrical circuit. AGM Vision bulbs are tested to guarantee the stated lifespan.

The high-power versions (80W, 100W) of the H3 exist, but are not approved for road use. They give off more heat and can damage polycarbonate optics as well as the connectors. As a legal alternative, +100% or +130% bulbs keep the original power while optimizing the filament and the gas in order to produce more lumens. This is the recommended solution to improve visibility in complete legality. AGM Vision offers both options.

The standard and xenon-effect H3 bulbs bearing the ECE marking (the letter “E” followed by a number on the glass) are approved and pass the technical inspection without any problem. The high-power versions (80W, 100W) and blue or purple tints are not approved and may lead to a refusal. AGM Vision clearly indicates the approval on each product sheet. For road use, always choose a bulb with the ECE marking.