Thwaites Expansion Tank - OEM Number: T104428

Part No. HMP4347

Expansion Tank - Thwaites

Manufactured to OEM specifications from durable, heat-resistant materials, the expansion tank is engineered to withstand continuous temperature fluctuations, coolant exposure, vibration, and the demanding conditions encountered on construction and civil engineering sites.

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£209.45
ex VAT
Est. 7-10 Working Days

The Thwaites Expansion Tank (OEM T104428) is a genuine replacement cooling system component designed for use on selected Thwaites site dumpers. The expansion tank provides a reservoir for engine coolant, allowing for the natural expansion and contraction of coolant as engine temperatures change. This helps maintain the correct cooling system pressure while ensuring a consistent supply of coolant to the engine.

Manufactured to OEM specifications from durable, heat-resistant materials, the expansion tank is engineered to withstand continuous temperature fluctuations, coolant exposure, vibration, and the demanding conditions encountered on construction and civil engineering sites. Precision-manufactured for an accurate fit, it is designed as a direct replacement component to restore the performance and reliability of the engine cooling system.

FUNCTION AND OPERATION

  • Stores coolant as it expands during engine operation
  • Maintains the correct coolant level within the cooling system
  • Helps regulate cooling system pressure
  • Returns coolant to the system as the engine cools
  • Supports efficient engine temperature control
  • Designed for reliable operation in demanding applications

TECHNICAL DETAILS

  • OEM Part Number: T104428
  • Type: Expansion tank
  • Function: Coolant storage and expansion
  • Application: Selected Thwaites site dumpers
  • Material: Heat-resistant, heavy-duty construction
  • Design: OEM direct replacement component

TYPICAL APPLICATIONS

Suitable for selected Thwaites equipment, including:

  • Site dumpers
  • Front tip dumpers
  • Swivel skip dumpers
  • Other Thwaites machines fitted with the compatible cooling system

Always verify compatibility using the machine model and serial number before ordering, as expansion tanks can vary in capacity, mounting arrangement, hose connection size, and cap specification between machine models and production revisions.

IMPORTANT INFORMATION

Always confirm the correct OEM part number, machine model, serial number, and cooling system specification before ordering, as expansion tanks are manufactured to precise dimensions and connection requirements. Installing the correct component is essential to maintain proper coolant circulation, cooling system pressure, and reliable engine temperature control.

Common signs of a worn or damaged expansion tank include coolant leaks, cracks, discolouration, damaged hose connections, coolant loss, or visible deterioration caused by age or heat. When replacing the expansion tank, it is recommended to inspect the radiator cap, coolant hoses, hose clips, radiator, thermostat, and surrounding cooling system components for signs of wear or damage. Replacing any worn associated components at the same time will help maximise the reliability and service life of the complete engine cooling system.

Weight 1.36
OEM Number T104428
Manufacturer Thwaites

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery*
£11.95 or FREE for orders over £150
Orders placed before 4pm Monday to Friday will be delivered on the next business day.
Orders placed after 4pm on Friday will be delivered the following Tuesday.
*Next day delivery applies to stocked items only. Availability can be found on the product pages.

Premium Delivery*
£30.00 for delivery before 10:30am
£25.00 for delivery before 12:30pm
*Premium delivery applies to stocked items only. Availability can be found on the product pages.

For all other countries, please click here for full delivery information.

**Separate carriage charges apply to bulk products such as 205L barrels.

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