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Coolant Expansion Tank HD

The Expansion Tank is more complex as it is always under pressure, the pressure cap is located on this tank rather than the radiator itself. Typically the expansion tank is at the highest point in the cooling system with the coolant being continuously cycled through the tank, here the pressure released from the hot coolant fills the top half of the tank and acts as a force to push the coolant back into the system.

Tanks will often become discoloured, brittle, contaminated with sludge or even break requiring immediate replacement for the cooling system to continue effective operation.

DAYCO Expansion are made to OE specifications and make/model specific.

Dayco HD Expansion Tanks are warranted for 18 months/150,000klm/5400 hours of operation whichever occurs first.


Click on a column heading to sort the items in the list

Part numberDescription
DET5001HDExpansion Tank
DET5002HDExpansion Tank
DET5003HDExpansion Tank
DET5004HDExpansion Tank
DET5005HDExpansion Tank
DET5006HDExpansion Tank
DET5007HDExpansion Tank
DET5008HDExpansion Tank
DET5009HDExpansion Tank
DET5012HDExpansion Tank
DET5014HDExpansion Tank
DET5015HDExpansion Tank
DET5017HDExpansion Tank
DET5018HDExpansion Tank
DET5019HDExpansion Tank
DET5020HDExpansion Tank
DET5021HDExpansion Tank
DET5022HDExpansion Tank
DET5023HDExpansion Tank
DET5025HDExpansion Tank
DET5026HDExpansion Tank
DET5027HDExpansion Tank
DET5028HDExpansion Tank
DET5030HDExpansion Tank
DET5032HDExpansion Tank
DET5038HDExpansion Tank
DET5041HDExpansion Tank
DET5043HDExpansion Tank
DET5049HDExpansion Tank
DET5051HDExpansion Tank
DET5052HDExpansion Tank