By the eyes, you can find h4 is very different h7 headlight bulbs.

Because h4 is p43t and h7 headlight bulbs are all px26d.

In order to make you clearly h4 vs h7 headlight bulbs, I will show you puctures as below.

Meanwhile, h4 headlight bulbs have 2 filament that they are 60/55w.

But h7 headlight bulbs are only single filament, which is 55w.

The lumens between h4 and h7 headlight bulbs are all litter bit different.

H4 is 1500/1350lm ± 15%, but h7 headlight bulbs are 1500lm ± 15%.

H4 headlight bulbs is high-low beam together, but h7 headlight bulbs are alwasy using as low beam.

Welcome all people come to talk with us h4 vs h7 headlight bulbs at any times.