H4 bulbs are simple to change and well worth it, the difference is amazing. giving out a much whiter and clearer light. The Manufacturer quotes around 800% improvement and thats difficult to prove but another advantage that is well worth the change is the heat difference and far less demand on your electrical system, particularly on older vehicles for which H4 is the Standard fit. a built in fan also provides extra cooling. Great Product for instantly improving your night driving vision. Read more

I recently installed the FateEye H4 LED Headlight Bulbs Conversion Kit (6500K White Light with Fan), and I'm genuinely impressed with the upgrade. This is a simple, like-for-like replacement for factory halogen bulbs that makes a dramatic difference in visibility and performance, claiming to be 800% brighter than halogen and delivering an exceptional 44,000LM brightness with a 200W power output, thanks to its advanced automotive-grade LED chips. The light from these bulbs is a clean, true 6500K bluish-white, with a higher intensity than the original equipment. The increase in power is immediately noticeable, especially when replacing my high beams—it was a literal difference between night and day. The ultra-thin chip design and precise shading create a super-focused beam pattern with a wider angle, which importantly, reduces glare for oncoming vehicles and keeps the majority of the light below the OE cutoff. A major advantage is that these bulbs do not flicker, which suggests a better internal power supply. Installation was a breeze. As a simple plug-and-play replacement, the entire job took me about 10 minutes for both bulbs. It is important to note, however, that the lamp bases are on the larger side, so it’s wise to check the dimensional information ahead of time to ensure there's enough room in your vehicle for a proper installation. In terms of durability, the bulbs are built with high-quality 6063 aviation aluminum and an efficient heat dissipation system, which includes the fan. This design ensures a long lifespan of up to 100,000 hours and provides an IP68 waterproof and dustproof rating, ensuring performance in extreme weather conditions. It's also worth noting that the old halogen bulbs were better at heating the lenses to melt frost and snow in cold weather, so I may switch back for winter. The FateEye H4 LED bulbs have a non-polarised design and simple wiring, making them compatible with 99% of vehicles, including hybrid, electric, and conventional models. If you do experience flickering lights or dashboard errors, the company is available for feedback and assistance. Overall, this conversion kit is a fantastic upgrade. It provides a significant boost in brightness and visibility, installs easily, and is a big step up from first-generation LED bulbs and some other similar products on the market. It is a highly recommended choice for anyone looking for a reliable, bright, and easy-to-install headlight solution. Read more

These were really easy to fit. They're practically the same size as the existing ones, and fit in the same hole with alignment disc where you pull the metal lever over. Hardest part was getting the connector off the back of the old one. Had no issues with CAN bus or flickering and are a considerable upgrade to existing bulbs. These are very bright and very white in colour. Doesn't seem to have added any additional width or depth to the headlights as such, so I do think they're properly aligned and shielded for conversion. These are mostly metal body, with a fan on the back. takes your regular power connector and is plugs in with a little pig tail. You might need to zip tie this down to stop it flapping about after install. Came really well packaged and ready to go. Read more

Needed brighter headlights for night driving. Easy to install, fan keeps bulbs cool, and light output is strong and white. Waterproof feature is a bonus. Not revolutionary, but it does exactly what it’s supposed to. Read more

These H4 LED headlight bulbs are a massive improvement over standard halogens, delivering 800% more brightness with a crisp 6500K white light. Installation is a breeze thanks to the plug-and-play design, and the built-in fan keeps them cool even on long drives. ✅ Benefits: • Extremely bright (44,000LM total) – excellent visibility at night • 6500K white light improves clarity and reaction time • Quiet, efficient cooling fan prevents overheating • IP68 waterproof – reliable in all weather conditions • Easy installation – no wiring or modifications needed A fantastic, road-safe upgrade that makes night driving clearer, safer, and more comfortable. Highly recommended! Read more

I'll preface by saying my partner is a mechanic. He said these were really easy to fit, and work really well, bright without too much glare. He's really impressed with these led headlights and asked me to get another set for his other car! Read more