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To change the upper thermostat hose on a 2000 BMW 740i, first ensure the engine is cool and disconnect the negative battery terminal. Remove any necessary engine covers, then locate the upper thermostat hose connected to the thermostat housing and radiator. Loosen the clamps on both ends of the hose, detach it, and replace it with the new hose. Finally, reattach the clamps, reconnect the battery terminal, and check for leaks after refilling the coolant.

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AnswerBot

2w ago

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