21266497 Radiator | Genuine Volvo Penta Part

🔧 Product Description

Genuine high-capacity radiator used in the later hot-climate cooling package of Volvo Penta TAD520GE, TAD530GE and TAD531GE generating-set engines. The documented package begins from engine serial number 5310647011 and uses fan shroud 21266511.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD520GE
• Volvo Penta TAD530GE MECH
• Volvo Penta TAD530GE EDC4
• Volvo Penta TAD531GE MECH
• Volvo Penta TAD531GE EDC4

• Engine Family: TAD
• Serial Range: SN5310647011-

⚙️ Key Features

• Hot-climate radiator package
• Confirmed TAD520GE, TAD530GE and TAD531GE application
• Documented from serial number 5310647011
• Matched to fan shroud 21266511
• Factory coolant, mounting and fan-clearance geometry

🔌 Function

The radiator removes heat from engine coolant under high ambient-temperature conditions and maintains the required generating-set operating temperature.

⚠️ Common Signs of Failure

• Engine overheating at high load or ambient temperature
• Blocked or damaged fins
• Internal scaling or cold spots
• Corroded core or tanks
• Fan-to-core clearance problems after incorrect installation

🛠️ 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

• 21266497 → Supersedes 20405950

OEM / Related Numbers

• 20405950 earlier number superseded by this part
• 20412320 - Earlier radiator used through serial 5310647010 in the preceding package
• 21266489 - Other radiator references by climate and revision
• 22705939 - Other radiator references by climate and revision
• 21266511 - Matching hot-climate fan shroud
• 20531427 - Expansion-tank references by revision
• 20845189 - Expansion-tank references by revision
• 20531428 - Expansion-tank references by revision
• 20531429 - Coolant-level sensor references
• 20824642 - Coolant-level sensor references
• 20405749 - Vibration damper
• 20405667 - Bracket
• 20412378 - Upper fan protector
• 20412355 - Right fan protector
• 20412354 - Left fan protector

📦 Condition

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