Philips 9004 X-tremeVision Upgrade Headlight Bulb with up to 100% More Vision, 2 Pack

Significantly brighter than stock. Before replacing both bulbs I did a rudimentary comparison with the vehicle facing a white wall. Installed the Philips X-Treme on passenger side headlight and a PIAA Xtreme on the driver's side. The brightness difference (if any) between these two are indistinguishable. Unsure of the Philips' lifespan but the PIAA lasted for about two years.UPDATE: I purchased these in July 2016. One failed December 2018. For my experience it's safe to say the Philip's lifespan is roughly the same as the PIAA - 2 Years.

Price was good.Not as bright as I hoped.Really need something in the 4000-4500k range but would have to pay more.Installation just depends on vehicle.Mine is a 99 jeep grand Cherokee with faded housings.Haven't used long enough to say how long they will last.Seem better than basic bulbs.

We have a 1997 Nissan Maxima I've been trying to keep running (>210000 miles) for the benefit of two daughters. The older one smacked the grille out of it a few years ago, so I know the headlight assembles have been replaced, but you never know what you get with repairs on old cars. Anyway, while she is away at college, it mostly sits in the garage, and I occasionally drive it just tot keep the battery charged. Most recently, one of those jaunts was at night. Good grief, did the headlights suck! So much so I thought this was safety issue, so I did some research, and it seemed the Philips X-treme vision bulb replacements might help the situation without having to spend too much on an old jalopy. Bingo! While it's not like a newer car with HID or LED headlights, it's definitely in the realm of satisfactory, and *way* better the the stock bulbs. I wouldn't have believed the difference if I hadn't seen it myself.

Meh on low beam, fantastic on high beam. Only lasted a year before one went out. I will be switching back to Sylvania.

Dramatic improvement over the standard bulbs. I live in an extreme rural area in the Pacific Northwest where there are few visible road stripes, lots of rain and lots of dense timber. Makes the pre-dawn commute in my 89 Ford truck much safer.

I have had many different sizes of these bulbs in different vehicles. They are brighter but they do not last. I’ve had them burn out in 15-20 hrs of use. I’m lucky to get one year of use out of them with headlights only being used at night. Not good value when your spending these every year on bulbs. Won’t buy again.

Perfect replacement for 2000 Nissan XTerra OEM light. nice and bright, but not too bright that you're annoying other drivers and getting headlights flashed at you.

I put four stars because it didn't meet the expectations I wanted to but to be honest I am my own critic I drove this sucker yesterday and fell in love before I was blind behind the wheel now I can see so this is actually an excellent product please don't mind the four stars can't wait to drive tonight I love night drives now