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Genuine Audi TT Thermostat
Engine Coolant Thermostat- Select Vehicle by Model
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5 Thermostats found
Audi TT Thermostat Part Number: 06H-121-113-B
$90.43 MSRP: $126.65You Save: $36.22 (29%)Ships in 1-2 Business Days
Audi TT Thermostat Housing Part Number: 06F-121-111-H
$91.62 MSRP: $128.32You Save: $36.70 (29%)Ships in 1-2 Business Days
Audi TT Thermostat Housing Part Number: 06F-121-111-F
$98.76 MSRP: $138.32You Save: $39.56 (29%)Ships in 1-2 Business Days
Audi TT Thermostat Part Number: 050-121-113-C
$44.52 MSRP: $61.32You Save: $16.80 (28%)Ships in 1-2 Business DaysAudi TT Thermostat Part Number: 050-121-113-B
$50.82 MSRP: $70.00You Save: $19.18 (28%)Ships in 1-2 Business Days
Audi TT Thermostat
The Audi TT Thermostat controls the temperature of the engine by regulating the flow of coolant through the block and radiator. The valve is situated in a housing near the radiator outlet and is closed during startup so that the Audi engine can quickly reach its temperature. An expansion of a wax pellet inside the small metal body as the coolant heats pushes a small piston that opens the valve. When the valve opens, the Audi TT dissipates heat through the radiator by circulation of the coolant so that the temperature remains within limits. In Audi's powertrain, if the coolant cools below the set point, the wax contracts, the spring pushes the valve shut, circulation slows, and this continues to repeat. By regulating cooling, this closed-loop action prevents the engine from getting too hot or too cool and aids stability in combustion efficiency and emissions. The Thermostat need not be programmed or adjusted externally under normal driving conditions, as it operates mechanically, not electrically. Many automotive cooling systems make use of the same temperature-responsive principle, therefore the cooling circuit design in the Audi TT follows established mechanical practice. Continued action of the Thermostat will avoid damaging oil, gaskets, and sensors from the damaging effect of heat from excessive rise in temperature. Owners depend on a small Audi TT Thermostat to ensure that the car's cooling system works properly on an everyday basis in various conditions.
Choose original equipment manufacturer Thermostat for great performance and strong durability. They use Audi's official craftsmanship and high-grade materials, and meet strict quality standards. Are you looking for quality Thermostat at a good price? Come to our online store. We carry a wide range of genuine parts for your Audi TT and the prices are competitive. Each part comes with the manufacturer's warranty. You can install with confidence and get steady results. Over time, you'll save money and avoid hassle. Keep your maintenance simple and protect your vehicle with OEM parts. Get the quality your TT needs now.
Audi TT Thermostat Parts and Q&A
- Q:How to remove and install the Thermostat in an engine on Audi TT?A:With the engine fully cold, remove the cap from the coolant expansion tank, disconnect the battery ground strap from the negative terminal, and remove the upper and lower engine sound insulation panels. Drain the coolant, then turn fasteners to remove the sound insulation panels from the left side of the engine compartment. Disconnect the air hose at the throttle valve control module, the harness connector from the mass air flow sensor, and the air cleaner mounting bolts to remove the air cleaner assembly. Release the retaining tabs and pivot the fuse box upward while keeping the electrical wires connected, then disconnect the fuse box from the carrier at the rear hinge and position it out of the way using a tie wrap. Remove the mounting bolts and the fuse box carrier, then disconnect the vacuum hose from the intake manifold change-over valve and remove the mounting bolts and the intake manifold change-over assembly. Working at the front left side of the engine, disconnect the engine coolant temperature sensor harness connector, then disconnect the secondary air hose and move it out of the way. Disconnect the coolant hoses at the indicated connections, remove the mounting bolts and the bracket for the secondary air hoses, and the mounting bolt on the bracket for the wiring harness. Remove the thermostat housing, pushing the coolant pipe toward the coolant pump to prevent it from being removed, then remove the O-ring and thermostat from the housing. Install in reverse order of removal, noting the installation position of the thermostat and replacing the O-ring and gaskets.
- Q:What happens when a thermostat is stuck open or closed, and how can the thermostat be accurately tested on Audi TT?A:An open thermostat will cause the engine to warm up slowly and generally run below normal operating temperature at highway speed. A closed thermostat will restrict coolant flow to the Radiator and cause overheating. The thermostat to be tested must first be removed and after that placed in a container of hot water (temperature is noted by an accurate thermometer) to monitor the temperature at which it first starts to open and the temperature at which it is fully open. To see if the thermostat opens and whether coolant is circulating through the radiator, you can let a cold engine run at idle (while warming up). As the coolant temperature rises, feel the heater and expansion tank hoses. They will get hot. The radiator hoses - especially the lower hose - should remain cool to touch. The radiator hoses should warm quickly when the thermostat opens, with the radiator fan cycling on soon afterwards. If the radiator hoses are not hot, the thermostat either has not opened or the radiator is clogged. If the radiator hoses are hot but the fan did not come on, check the radiator fans with the wiring diagrams.
