This 3363394 pump is a genuine OEM part  made for "most" direct drive. Whirlpool and Kenmore clothes washers made since 1985. It is not a generic after market lesser quality pump. It is the real thing. Your old pump may have the number 3352293 on it. The 3363394 is the replacement part for that number. 3363394 Whirlpool  /  Kenmore Washer Pump. The 3363394 pump has been in use since approx 1985.

Click Here For 3363394 Washer - Pump Installation Help