Product review (5 stars): Perfect fit for Maytag dryer
This was purchased for a Maytag dryer model sdg3606a  also known as sdg3606aww.
We purchased this part after the idler pulley wheel broke and in determining that the pulley wheel had broken we noticed some cracks on our belt and decided to replace it because we might as well do it all at once we have a Maytag dryer and if you're unaware Maytag was purchased by Whirlpool as well as a Mana so you will find multiple part numbers for the exact same part simply based upon who the manufacturer was at the time the unit was made. This part number was sold under wp40111201, but it also sells under part number AP6009126. It's likely the AP stands for in Amana Part.
Since replacing the belt the and idler pulley wheel the dryer is now back to functioning exactly as it should and the nasty sounds it was making prior to the wheel breaking have resolved.