23797951 Heat Exchanger | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta shell-and-tube coolant to raw-water heat exchanger from the Cooling System group, weighing 31.30 kg and listed for six D series engine applications. It supersedes 21842276, and at over 30 kg needs support during fitting.

🚤 Compatibility

Typically suits:

• Volvo Penta D11C1-A MP
• Volvo Penta D11C3-A MP
• Volvo Penta D11C2-A MP
• Volvo Penta D11C4-A MP
• Volvo Penta D11B3-A MP
• Volvo Penta D11B1-A MP

• Engine Family: D

⚙️ Key Features

• Heat exchanger from the Cooling System group
• Shell-and-tube coolant to raw-water construction
• 31.30 kg
• Supersedes 21842276
• Listed for six D series engine applications

🔌 Function

Passes engine coolant across a bundle of tubes carrying raw water, moving the engine's heat to the sea without letting the two circuits mix.

⚠️ Common Signs of Failure

• Engine running hotter than normal, worst at full load
• Coolant level dropping, or oil and coolant found mixing
• Salt crust or coolant weep at the end covers
• Tube bundle silted, scaled or blocked when withdrawn
• Coolant showing in the raw water discharge

🛠️ Service Notes

• Renew the end cover O-rings and gaskets whenever the exchanger is opened
• Check the raw water pump impeller and the sea strainer at the same time - debris from a shed impeller lodges in the bundle
• At over 30 kg it needs support during removal and fitting

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23797951 → Supersedes 21842276

OEM / Related Numbers

• 21842276 earlier number superseded by this part

📦 Condition

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