Sure is. You can proboly get then at Wally world.
Some people have even gotton 100 watters to replace the factory 55 watt bulbs.
I think it's an h1 bulb but I could be wrong.
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http://www.cardomain.com/ride/30098032004 Limited (Rescue Jeep)
2 1/2 daystar lift 235/70/16
{Electric Stuttertone Emergency Horn}
strobe leds front and rear
2 way VHF radio (kenwood)
westin brush guard+ Hella 500's w/ 100w 3000k bulbs
back seat removed and shelf added
rolled and totaled dec 4 2010..(drunk driver)