21921055 Heat Exchanger | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta heavy-duty engine heat exchanger, part number 21921055. It is a shell-and-tube unit that transfers engine heat from the closed coolant circuit into the raw-water circuit while keeping the two fluids separated.

⚙️ Key Features

• Genuine Volvo Penta heat-transfer assembly
• Shell-and-tube coolant-to-raw-water construction
• 28.94 kg
• Factory coolant and raw-water connection geometry
• Designed for continuous marine-engine load
• Maintains separation between the cooling circuits
• Engine type: Volvo Penta marine or industrial engine system

🔌 Function

Transfers heat from the closed engine-coolant circuit into the raw-water circuit without allowing the two to mix.

⚠️ Common Signs of Failure

• Rising coolant temperature at sustained load
• Coolant or raw-water leakage at the end covers
• Internal restriction from scale, debris or marine growth
• Coolant or salt contamination across the circuits
• Reduced heat transfer despite normal pump operation

🛠️ Service Notes

• Renew the end-cover seals and check the anode arrangement whenever the exchanger is opened

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21920976 - related mounting bracket where specified

📦 Condition

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