3858847 Seawater Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta seawater pump with a 165 mm pulley and 5/16 inch mounting bolt, from the Cooling System group, weighing 1.814 kg and listed for 62 applications. It supersedes part number 3855778. The pulley size and bolt size are what separate the pump variants, so check both against the engine.

🚤 Compatibility

Full model list at the end of this description.

⚙️ Key Features

• 165 mm pulley
• 5/16 inch mounting bolt
• 1.814 kg
• Supersedes 3855778, listed for 62 applications
• 165mm (Volvo assembly listing)

🔌 Function

Draws seawater in through the inlet and pushes it through the cooling circuit, carrying engine heat overboard through the heat exchanger and exhaust.

⚠️ Common Signs of Failure

• Little or no water at the exhaust outlet
• Temperature climbing, or an overheat alarm
• Impeller vanes torn, worn short or missing on inspection
• Water weeping or dripping from the pump body or its seal
• Squealing, rumbling or play felt at the pulley

🛠️ Service Notes

• Check the 165 mm pulley and the 5/16 inch mounting bolt against the engine before ordering - the pump variants differ in exactly these details
• If the impeller has shed vanes, find the missing pieces downstream before running the engine or the heat exchanger will block
• Check the inlet, strainer and hoses for restriction, and renew the impeller and seals as routine maintenance

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3858847 → Supersedes 3855778

Other-Brand OEM Numbers

• Johnson Pump: F5B-905
• Johnson Pump: 10-13159-18

Aftermarket / Verified Equivalents

• Recmar: REC3858847

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta 8.2GLIMDM, 5.8FiPNCACE, 5.8FiPNCMCE, 5.8FLPMDA, 5.8FLINCS, 5.8FLIHUB, 5.8FLIHUE, 5.8FLPHUE, 5.8FLPHUR, 5.8FLPNCA, 5.8FLPNCM, 5.8FSiPHUBCE, 5.8FSiPHURCE, 5.8FSiPNCACE, 5.8FSiPNCD, 7.4GiINCSCE, 7.4GiPNCACE, 7.4GiPNCMCE, 7.4GLIMDM, 7.4GLINCS, 7.4GLPMDA, 7.4GLPMDM, 7.4GLPNCA, 7.4GLPNCM, 7.4GSiXNCM, 5.7GLPMDA, 5.8FiPHUECE, 5.8FiPHURCE, 5.8FiPMDA, 5.8FiPMDM, 5.7GiIMDA, 5.7GiPHUS, 5.7GiPMDA, 5.7GiPMDACE, 5.7GiPNCACE, 5.7GIPNCMCE, 5.7GLIMDA, 5.0FLPHUE, 5.0FLPHUR, 5.0FLPMDA, 5.0FiPHUECE, 5.0FiPHURCE, 5.0FiPMDA, 5.0FiPMDM, 4.3GIPNCACE, 4.3GIPNCMCE, 4.3GiJWTR, 4.3GLMMDA, 4.3GLPMDA, 4.3GLPNCA, 4.3GSPNCA, 4.3GSPNCM, 4.3GSPMDA, 4.3GSJWTR, 8.2GLPMDA, 8.2GLPMDM, 5.8FIIHUECE, 5.8FiIHUBCE, 7.4GIIHUBCE, 7.4GLIHUB, 7.4GSIINCS, 5.8FSIINCS