Product review (5 stars): Did research
After doing a little research, the correct part was chosen for the dryer model MDE 7400 AYW. The dryer serial number was very important to chose the right part.

The Maytag Model # MDE 7400 AYW :
If the first 2 numbers of your serial# starts with 10-15, you need this timer: Manufacturer part #33002855
OR
If the first 2 numbers of your serial# starts with 16 or higher, you need this timer: Manufacturer part #33002803

Dryer is working Thank you!