855517 Seawater Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta seawater pump from the Cooling System group, weighing 1.036 kg and listed for three applications on AQ series engines.

🚤 Compatibility

Typically suits:

• Volvo Penta AQ171A
• Volvo Penta AQ171C
• Volvo Penta 251A

• Engine Family: AQ

⚙️ Key Features

• 1.036 kg
• For AQ series engines
• Three listed applications
• Raw water pump

🔌 Function

Draws raw water in from outside the boat and pushes it through the cooling system to carry the engine's heat away.

⚠️ Common Signs of Failure

• Little or no water coming out with the exhaust
• Engine temperature climbing under load
• Water weeping from the pump body or its telltale drain
• Impeller found with vanes torn off or taking a set
• Squealing or rumbling from the pump when running

🛠️ Service Notes

• A second seawater pump, 855578, is listed here at 1.055 kg - only 19 grams apart, so weight is no guide; that one covers 22 applications across AQ, B and BB engines while this one covers three AQ applications
• If the impeller has shed vanes, find them downstream before running the engine again or they will block the cooler
• Check the seacock, strainer and hose for a blockage before condemning the pump

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• Johnson Pump: 10-32621-2

Aftermarket / Verified Equivalents

• Crom Marine: 115172
• Orbitrade: 15578

📦 Condition

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