The septic tank distribution box, or septic d-box, is a crucial component to your septic system. The average cost to replace the septic d-box is $1,175. On the low end, you might spend $550 for a ...

Jose Magdaleno, right, and Joseph Divino make a custom box after scanning the dimensions of a car part at the new CarParts.com distribution facility in Las Vegas Friday, Sept. 27, 2019.