I can't understand the meaning of «bracket» in this sentence. A mechanic is fixing a car whose filter is broken. Here is the complete text (it's an american novel):
She unscrewed the cap of the relief fitting and put a shop towel over it to catch the gas that leaked out when she pressed the valve. When the lines were bled, she stuffed the towel into her back pocket and went to her toolbox to grab the 16mm and 19mm wrenches and the quick- disconnect tool. Then, with an athletic jump, she disappeared into the yellow-framed pit so she could work from underneath. She removed the bracket, released the snaplock fitting, and pulled the rubber hose off the outlet side of the filter first to keep the fuel from dripping in her eyes.