Seller notes

Vehicle Information:? Audi A4 3.0L 2002-2005Audi A6 3.0L 2002-2006 What is a Car Thermostat? A thermostat opens or closes a valve to control coolant flow between the cars radiator and engine. It responds to changes in temperature. The valve itself operates through a wax-container element. As coolant temperature increases, the fluid (or wax) container melts and enlarges, which, in turn, pushes a small bar, dividing a centre plate from its mounting base to expose the valve. The thermostat also hel...

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