Hi guys~I have couple of questions here ( I am a new at this so please bare with me)I have a 01 QX4 and one of the headlights went out. I want to order a pair but not through Nissan/Infiniti dealership. 1)I was wondering what's the fitment on that? (I've heard its H4) 2) I've been shopping around on the net and most of the HIDs says soomthing like H4 6000K. Just wondering what's the 6000K and what's the number on 01 QX4s? ( I've heard its for brighness, if so, what the max. I can get away with on my SUV)3) Any suggestions on brand or where to order them from?

Thanks a lot!

Below are the bulbs for your vehicle via the Sylvania site. Low beams are HID-D2R bulbs and high beams are 9005's

2001 INFINITI QX4

Low beam headlampHID-D2R

High beam headlamp9005 9005ST Silverstar High Performance Lighting: the whitest and brightest Halogen9005CB Cool Blue Halogen Upgrade: White Hot; Super Cool; 100% Street Legal

Parking light168

Front turn signal7440

Rear turn signal1156A 1156AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style1156ALL Long Life Upgrade: Up to twice the life of the standard lamp

Tail light7443

Stop light7443

High mount stop light168

Fog/Driving lightH3-55W H3ST Silverstar High Performance Lighting: the whitest and brightest Halogen

License plate194 194LL Long Life Upgrade: Up to twice the life of the standard lamp

Back up light921 921LL Long Life Upgrade: Up to twice the life of the standard lamp

Front sidemarker168

Step/Courtesy lightDE3175

Trunk/Cargo areaDE3175

6000K denotes 6000 Kelvin. Its an indicator of how much energy is expended to produce optimum lighting as it relates to sun light. The higher the Kelvin number, the closer your to producing sunlight. However, the higher the Kelvin the more wattage is required to produce that light which can tax/damage your electrical system.

For reference a run-of-the-mill Halogen bulb runs at 3200K-3800K to produce optimum lighting. However Halogen bulbs produce a less intense diffused "dirty" light as opposed to HIDs which produce a more concentrated pure white light which is better for night time illumination.

PIAA makes some nice efficient aftermarket HID bulbs which are slightly cheaper than Nissan OEM. The produce H4 HIDS that produce 110 watts of light at 4000K while using only 55watts from your vehicle electrical system.

Keep in mind that HID technology is still fairly new and that quality bulbs are still pricey.