The Yanmar Impeller Pump Cover Gasket 104211-42090 provides a reliable, watertight seal between the impeller pump cover and the pump housing. Correct sealing is essential to prevent seawater leaks and to ensure efficient operation of the raw water cooling system. Product Type Impeller pump cover gasket OEM / Reference Number 104211-42090 Suitable for Yanmar engines: 2GM Series 2GM20 2GM20-F 2GM20-F-YEU 2GH20-YEU 2GMLP 3GM Series 3GM 3GM-D 3GM-F 3GM30 3GM30-F 3GM30-F-YEU