21226021 Hose | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta TAD5/TAD7 Expansion-Tank Coolant Hose - Part Number: 21226021

Genuine moulded coolant hose used in the radiator and expansion-tank systems of Volvo Penta TD5, TAD5, TD7 and TAD7 industrial and generating-set engines. It replaces earlier hose 20405748.

⚙️ Key Features

• Current replacement for hose 20405748

• Expansion-tank and radiator cooling-system application

• Factory moulded bend and hose diameter

• Used across documented TAD5 and TAD7 serial-range cooling packages

• Designed for hot pressurised coolant

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21226021 → Supersedes 20405748

OEM / Related Numbers:

• 21226021

• 20405748

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

Associated Service Parts:

• 20585482 / 21661750 - Expansion-tank references by revision

• 20585484 / 21661774 - Coolant-level sensor references

• 21087609 / 21661157 / 21662524 - Related hose references

• 943471 / 20893584 - Hose-clamp references

• 20405755 - Related clamp

• 20912088 - O-ring; ordered separately

• 20912085 - Plug; ordered separately

• 20912091 - Bracket; ordered separately

🚤 Compatibility

Confirmed engine families include:

• TD520GE

• TAD530GE

• TAD531GE

• TAD532GE

• TD720GE

• TAD720GE

• TAD730GE

• TAD731GE

• TAD732GE

• TAD733GE

Documented TAD732GE/TAD733GE cooling-package serial ranges include:

• 10410387-10590631

• 10590632-10944313

• From 10944314

• Confirm hose quantity, tank version, connection diameter and engine serial number

🔌 Function

The hose transfers coolant between the engine cooling circuit and the expansion tank while allowing thermal expansion and engine movement.

Common signs of failure:

• Coolant leakage

• Cracking or heat hardening

• Swelling or softening

• Internal collapse

• Chafing

• Air entering the cooling system

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging