PCH117840LR - Coolant Hose – Expansion Tank Vent

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Coolant Hose - Expansion Tank Vent is the bleed hose in the engine cooling system, connecting the radiator bleed outlet to the coolant expansion tank. It forms the vent line of the cooling circuit, allowing trapped air and small volumes of coolant to pass back to the expansion tank. This supports correct filling and bleeding of the system and helps maintain stable coolant circulation. Show more