858701 Seawater Pump | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta seawater pump weighing 1.921 kg and listed for 29 applications across AD, D, TMD, BB, DP and DPX series engines and drives. Pump 858469 carries exactly the same published weight but a narrower fitment and a serial number limit - the weight will not tell them apart, so check the engine serial number and the fitment list.

🚤 Compatibility

• Engine Family: AD, D, TMD, BB, DP, DPX, SP, TAMD, MD

Full model list at the end of this description.

⚙️ Key Features

• 1.921 kg
• 29 applications across six engine and drive series
• Identical published weight to seawater pump 858469
• Cooling System group

🔌 Function

Draws raw water in through the inlet and pushes it through the exchanger circuit to carry engine heat overboard.

⚠️ Common Signs of Failure

• Weak or no flow at the exhaust outlet
• Coolant or exhaust temperature climbing under load
• Salt crusting or dripping at the pump cover or shaft seal
• Rumble or growl from the pump bearing
• Impeller vanes torn, set or missing on strip-down

🛠️ Service Notes

• Check the engine serial number - 858469 covers engines up to a specific build point
• Check the strainer, seacock and hoses for a blockage before condemning the pump
• Renew the impeller and cover gasket whenever the pump is opened, and account for every broken vane

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• Johnson Pump: 10-24277-3

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta AD41P-B, AD41B, AD41, AD41A, AD41BJ
• Volvo Penta DP-A, DP-A1, DP-B, DP-B1
• Volvo Penta TAMD41B, TAMD41M-A, TAMD41A
• Volvo Penta AD31, AD31B
• Volvo Penta D41, D41B
• Volvo Penta 740A, 290A
• Volvo Penta SP-A, SP-A1
• Volvo Penta TAMD31A, TAMD31B
• Volvo Penta TMD31A, TMD31B
• Volvo Penta TMD41A, TMD41B
• Volvo Penta BB740A
• Volvo Penta DPX
• Volvo Penta MD31A