H4 halogen bulb – dual-filament 60/55W

The H4 halogen bulb is used for dual-filament front headlights (low beam and high beam in the same bulb). It operates on 12V with a power of 60/55W. This is the standard reference for vehicles from before 2000 and for most motorcycles. The P43T base is recognizable by its three pins. 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 H4 is accessible to everyone. Access the rear of the headlamp from the engine compartment, unplug the electrical connector, remove the cover and the fastening system. Take out the used bulb and insert the new one without touching the quartz glass. Reassemble in the reverse order. The operation takes 10 to 20 minutes per side. Change both bulbs simultaneously for uniform lighting. AGM Vision bulbs are delivered with instructions.

Yes, the H4 xenon effect bulb produces a white light between 5000K and 6000K thanks to a treated bluish glass. It keeps the same base, the same power and remains ECE approved. The rendering is more modern than the standard version at 3200K. The slight loss of brightness is offset by better nighttime visual comfort. AGM Vision offers the standard and xenon effect versions for this reference.

A standard H4 lasts on average 500 to 800 hours. The long-life versions reach 1200 to 1500 hours. The high-performance versions (+100%, +130%) last 300 to 500 hours. The lifespan depends on the number of ignition cycles, vibrations, and circuit voltage. Driving on degraded roads reduces longevity. AGM Vision bulbs are selected for their durability and come with a warranty.

High-power versions exist, but are not approved for road use and may damage the headlight units. Choose +100% or +130% bulbs, which retain the original power while producing more lumens thanks to an optimized filament and gas. This is the best solution to improve visibility in full legality. AGM Vision offers these performance versions for the H4.

Standard H4 bulbs are designed for 12V (cars, motorcycles, light commercial vehicles). 24V versions exist for heavy goods vehicles and trucks, but they are separate references. Never install a 12V on 24V (immediate destruction), nor a 24V on 12V (very weak lighting). Check the rated voltage on the packaging. AGM Vision clearly indicates 12V or 24V compatibility on each product sheet.