The Yanmar Impeller Pump Gasket (129150-01881) is designed to provide a reliable, watertight seal between the engine block and the impeller (raw water) pump on Yanmar 3JH and 4JH marine diesel engines . Proper sealing at this interface is essential to prevent seawater leakage and ensure efficient raw water cooling. Manufactured to OEM-equivalent specifications, this gasket ensures accurate fitment and dependable performance. It should be replaced whenever the impeller pump is removed during maintenance or servicing. Product Type Impeller pump gasket (engine-to-pump) OEM / Reference Number 129150-01881 Installation Location Between the engine block and the impeller pump Compatibility Suitable for Yanmar engines: 3JH Series (all models) 3JH2 3JH2-TCE 3JH2E 3JH25A 3JH3 3JH3E / E-YEU-E 3JH4E 3JH5AE 3JH5E 4JH Series (all models) 4JH 4JH-DTE 4JH-HTZ 4JH-HTZA 4JH-TZ 4JH-TE
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