Expansion tank hose coolant hose Radiator hose OE LR094125 Engine coolant tank hose for Land Rover Range Rover

Product Description:

Expansion coolant water hose

OE NO.: LR094125

Applicable vehicle type: For Land Rover

Engine Coolant Tank Hose (Expansion Tank/Reservoir Connecting Hose) is the core component of the cooling system's “breathing circuit.”

• It connects the radiator's upper chamber (or cylinder head vent) ↔ expansion tank (reserve tank), forming a “closed-loop breathing system.”
• During thermal expansion, it directs excess coolant into the expansion tank to prevent excessive radiator pressure. During contraction, it relies on vacuum to draw coolant back, maintaining a constant main system level.
• Simultaneously, it serves an “air bleed” function, aiding rapid bubble separation when adding new coolant and reducing the risk of air lock.

Important Precautions

• Safety First: Before inspecting or touching any cooling system component, ensure the engine has completely cooled down. Opening the radiator cap or touching hoses while the engine is hot can cause severe burns from high-temperature coolant or steam spray.
• Address the Root Cause: If hoses bulge or rupture due to abnormal system pressure (e.g., combustion gas ingress from a damaged head gasket), the underlying issue must be diagnosed and repaired. Simply replacing the hoses will not prevent recurrence.

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