Cooling system expansion water hose for Volv o Engine coolant overflow hose 31338754

Product Description:

Auto expansion tank tube
OE NO.:   31338754   32222089

Applicable vehicle type: For Vol vo

The engine coolant overflow tube, also commonly referred to as an overflow pipe, expansion tank hose, auxiliary reservoir hose, or vent tube, is a small hose that connects the engine radiator (or radiator cap) to the coolant overflow reservoir/expansion tank.

Faults in overflow pipes are typically progressive and require regular inspection:

• Aging and Cracking: The most common fault, particularly at the two end fittings, due to long-term concentration of thermal stress.
• Hardening or Softening: Loss of elasticity, which may lead to loosening at connections or blockages.
• Internal Blockage: Caused by deteriorated flaking materials or deposits from using non-conforming coolant, resulting in restricted flow through the passage.
• Leakage at Connections: Loose clamps or aged/deformed pipe ends.

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