21540808 Radiator | Genuine Volvo Penta Part

🔧 Product Description

A high-ambient-temperature radiator used in the tropical cooling arrangement of selected Volvo Penta generating-set engines. It replaces two earlier radiator references and is designed to maintain cooling capacity in elevated intake-air temperatures.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD721GE
• Volvo Penta TAD722GE
• Volvo Penta TAD732GE EDC4
• Volvo Penta TAD733GE EDC4

• Engine Family: TAD

⚙️ Key Features

• Genuine Volvo Penta tropical-specification radiator
• Higher-temperature cooling-system configuration
• Integrates with expansion tank 20585482
• Works with charge-air cooler 20585438
• Supersedes radiators 20585499 and 20795988
• Engine type: Four- or six-cylinder turbocharged generating-set diesel

🔌 Function

Transfers engine coolant heat to the cooling airflow and maintains stable operating temperature under high ambient conditions.

⚠️ Common Signs of Failure

• Coolant leakage from the core or tanks
• Blocked, bent or oil-contaminated cooling fins
• Corrosion at tube or tank joints
• Reduced cooling margin in high ambient temperature

🛠️ Service Notes

• Flush the system before fitting a new radiator; scale and debris carried over from the old one will lodge in the new core and undo the job
• Fill with Volvo Penta coolant mixed to the concentration specified for your engine, mixed in a clean container beforehand rather than adding concentrate and water separately into the system
• Fill slowly and vent properly — open any bleed nipples shortly after starting, run up to temperature, let it cool and top up; expect to repeat this over the first few heat cycles as trapped air works its way out
• Fit the pressure cap specified for the system and renew it if the seal has hardened or the cap is corroded, or the system will not hold its designed pressure; never open a cap while hot
• Mount on its own rubbers or isolators with the fixings free of strain, and while access is good renew any hose that has gone hard or spongy and check clips and fan clearance

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21540808 → Supersedes 20795988 → Supersedes 20585499

OEM / Related Numbers

• 20795988 earlier number superseded by this part
• 20585499 earlier number superseded by this part
• 20585482 - expansion tank
• 20585486 - pressure cap
• 20585484 - coolant level sensor
• 20585579 - rubber mounting
• 20585513 - right brace
• 20585546 - left brace
• 20585573 and 20585572 - coolant pipes
• 20585438 - charge-air cooler
• 20585475 - fan shroud
• 21145393 - radiator protector

📦 Condition

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