hey im hoping someone can help i had to remove the doors from my fridge to get it in the house i just moved into and well theres a coupler on the water line under the kick plate in the front of the fridge its about 2 inches long white tube that bring the main water line and the door water line together theres a red collar on the door side and i blue collar on the feed line side i dont know what this part is called nor can i find it in the parts list for my fridge