Whirlpool 4396510 Ultimate Refrigerator Water Filter

Instructions

Twist the old filter a quarter-turn counterclockwise
Pull the filter straight out (don't worry, the water will shut off automatically)
Remove the reusable color-keyed knob from the end
Discard the old filter
Slide the knob onto the end of the new filter
Push the new filter into the fridge until it stops
Twist the filter a quarter-turn clockwise
Reset your 'change filter' light (if your fridge has one)

Reset Instructions

Press the light switch (the one that the refrigerator door presses every time you close the door) 5 times within 10 seconds or if the fridge has a filter button, press and hold it for 5-10 seconds