Product review (5 stars): Replaced this to get rid of moldy smell
I replaced this on our whirlpool front loading washer to get rid of the moldy smell. I tried the special cleaners and wash cycles but they never worked. Ideas on line about mold growing in this hose and the other drain hose. Sure enough when I pulled them black mold was there. This solved the smell. Unfortunately I am not sure fr how long.

On line I found a place that sells a special fan to circulate air through the washer, drying the inside parts including these hoses. The site provides a lot of information. From replacing the hose to the cause of the mold.