WPW10448901 Whirlpool Stack Dryer Motor. Replaces AP6021555, W10448901, 4446956, 8066068, 8535933, 8538265, 8539558, PS11754879, W10396037.This motor fits the all-in-one or "Thin Twin" Stacked washer/dryer and is the DRYER motor. Click MORE DETAILS link for specific model coverage.