YONGMING H4 LED Headlight Bulbs +200%, 2 PCS 40W 9000LM 6000K Led Lights for Car Bulb Kit use in Halogen Light Bulbs Replace, CPS Chip Temperature Control

Impressed by these Chinese lights. They fitted through my 20th century can H4 headlights very straight forward and very adjustable. I didn't need much adjustment for the bulbs. So far light output and performance has been great. They are stable and strong and shiny far ahead even on dipped beam.I will see how they last and perform over longer periods of running and especially when the weather gets warmer but for the price they far exceeded my expectations and met all my hopes are are far better value and performance than the halogen bulbs.Apologies for my old foggy headlight photo, they dry out after a few minutes and it is no fault of the bulbs but a credit of how well they perform even through these old lenses.

Quality all seems pretty decent, but could not install because they have the wrong beam pattern. These are for LHD countries, not the UK.These will dazzle oncoming drivers while not illuminating the nearside curb.If you’re in a left hand drive country:The beam pattern is average (having compared a few of this type), there’s a hard cutoff line but with a tonne of chromatic aberration (blue edge), the cutoff line curves downwards slightly toward the sides and is not particularly wide (illuminating straight ahead fine but missing the curbs nearby, a serious flaw as that’s exactly where a small child may be running out from).The pattern is roughly a semicircle but has a hotpot - the top half is brighter than the bottom. Some other brands don’t have this so the road near you ends up brighter than the road far away, but this design allows the near and far field to be similarly brightly lit. It’s a large hotspot so could still be improved, but at least some effort’s been made.The main beam is less of a flood and more of a spotlight. It’s great for long straight roads but offers no illumination to the sides or up, so very little help on winding or hilly roads. This coupled with the fact it shines through only half of the lens makes ‘flashing’ people hit-or-miss, only really visible if they’re straight ahead. The brightness of the ‘spot’ (actually a rectangle) is similar to the low-beam below and slightly intersecting it, definitely not any brighter which is disappointing given the smaller area the main beam covers.The fans are quite loud once they warm up for a couple of minutes, easily heard from inside the car with engine off and barely audible outside with the engine running.Had I been sent the RHD model I’d probably hang on to them, but would still try some other brands as there’s lots of room for improvement.

It's very very good. Very bright and sharp cut off line. It will not dazzle to oncoming traffic. It's not just led light. Have own lens on it. Night time even rainy nights perfect vision.