3803970 Coolant Pump Exch | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta remanufactured coolant pump for the D1-13, D1-13B, D1-13F, D1-20, D1-20B and D1-20F, weighing 1.014 kg. It supersedes 861990, which was catalogued earlier as a water pump, so an engine whose parts list still calls for that water pump takes this number now. At 1.014 kg it is the lightest of the five reman coolant and circulation pumps listed here, below 3801343 at 1.089 kg and a long way below the 3.692 kg and 4.032 kg D9 pumps. Supplied on exchange, so a core fee is added to the invoice and refunded once the worn pump is returned - and Volvo Penta lets you keep the old one until the new pump is fitted and the engine is running again.

🚤 Compatibility

Typically suits:

• Volvo Penta D1-13
• Volvo Penta D1-13B
• Volvo Penta D1-13F
• Volvo Penta D1-20
• Volvo Penta D1-20B
• Volvo Penta D1-20F

• Engine Family: D
• HP Range: 13-20 HP

⚙️ Key Features

• For D1-13, D1-13B, D1-13F, D1-20, D1-20B and D1-20F
• 1.014 kg
• Supersedes 861990, catalogued earlier as a water pump
• Lightest of the five reman coolant and circulation pumps listed here
• 12-month Volvo Penta warranty, 24 months when fitted by an authorised dealer

🔌 Function

Drives coolant round the block, cylinder head and heat exchanger so that combustion heat is carried away to the raw-water side.

⚠️ Common Signs of Failure

• Coolant temperature climbing, or overheating under load
• Coolant weeping or dried deposits around the pump body
• Rumble, whine or grinding from the pump
• Play felt at the pulley or the drive shaft
• Bearing found rough and the shaft seal leaking on strip-down

🛠️ Service Notes

• An engine listed for water pump 861990 takes this pump
• Renew the gasket or O-rings and refill with the correct coolant mix rather than plain water, and check the belt and tensioner while the front of the engine is open
• Core deposit 3806970 carries the exchange fee and is refunded when the old pump goes back

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3803970 → Supersedes 861990

OEM / Related Numbers

• 861990 earlier number superseded by this part

📦 Condition

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