Product review (4 stars): I only replaced the one side since the other side appeared to be good and very
I used this in a Kitchenaid dishwasher since the part number is the same, i.e. it's just a Whirlpool with a Kitchenaid logo.

I only replaced the one side since the other side appeared to be good and very, very tight.

For the install, if you have the strength, give it a try. I started with attaching to the door, and winding around the pulley then used a screwdriver and needle-nose pliers to pull it together. As your father told you... "Use your muscles".