What is the diameter of this tube?
Answer Hello Mike. The tubing 74006417 is 5/16" gas tubing.
Front tubing is shorter than the rear one, do you have different length of this tubing?
Answer Hello Qiqiang! There is only one oven burner tubing 74006417 used on your unit. I believe you are referring to the stove top burner tubing. This tubing is located on the orifice holder assembly, part number 5187M026-60. Thanks!