This impeller with O-ring is a genuine OEM part for seawater pumps used on Craftsman engines. A worn or damaged impeller can reduce cooling capacity and may cause engine overheating. Regular replacement of the impeller is recommended as part of routine engine maintenance. This is a genuine Craftsman OEM product . Craftsman OEM Part Number 20000021 Compatible Craftsman Engines CM2.16 CM3.27 CM4.42 Questions about compatibility or Craftsman engine parts? Our marine specialists are happy to help.
