A dryer's idler pulley wheel serves to help the belt to rotate the drum. This arm is what attaches to the idler pulley wheel.
Home Depot Number: HD11743027
Manufacturer Part Number#:
WP6-3033630
Manufactured by:
Whirlpool
for Maytag, Jenn-Air, International
Why buy the real thing?
OEM stands for Original Equipment Manufacturer. Simply put, this means that the company who made your appliance is also supplying the replacement part for it.