What are the differences between the H1, H4, and H7 bulbs?

Lighting is essential for road safety, especially at night. H1, H4, and H7 bulbs each have specific features suited to different headlights. Discover their differences, how to choose the best one for your vehicle, and our selection of LED bulbs.
📰 Published on 16 September 2024 at 08:16 🧑🏻‍🔧 by AGM Vision
📝 Modified on 24 June 2025 at 15:49
⏱️ Reading time: 1 minutes
différence ampoule h1 h4 h7
All the recommendations to improve your road safety thanks to H1, H4 and H7 bulbs.

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The lighting of a vehicle is crucial to ensure safety while driving, especially at night or in low visibility conditions. H1 bulbs, H4 and H7 are among the most commonly used, each having unique characteristics suitable for different types of headlights. In this article, we detail these differences, help you choose the best bulb for your vehicle and present our selection of the best LED H1, H4 and H7 bulbs.

H1 bulb: versatility and optimal visibility

The H1 bulbs are single-filament and very compact models used for high beams, low beams or fog lights. They are equipped with a standard base P14.5s and offer a concentrated light beam perfect for long-distance visibility.

  • Use: High beams ; low beams ; fog lights.
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