Audi VW Thermostat Meyle- 078121113G

Product Information

Thermostats are a simple device which regulates coolant flow through the engine. When cold it will stay closed, stopping coolant flow and helping the engine warm up faster. Once up to temperature, it will open and allow normal coolant flow and maintain proper engine temperature. Always install with the 'jiggle pin' bleed valve at 12 o'clock when possible.

For many applications, multiple temperature ratings are available. These ratings denote when the thermostat opens, and in extreme climates different temperature ratings can be used to assist the vehicle in maintaining proper temperatures. In very hot desert climates for instance, a lower temperature rated thermostat may be preferred.

There are two types of thermostat failures:

Thermostat stuck open (most common): Coolant will flow through the engine constantly from cold, preventing the engine from reaching operating temperature. Usually this means a rich mixture resulting in poor fuel mileage and potential catalytic converter damage.

Thermostat stuck closed: If the thermostat is stuck closed it will restrict flow into the engine resulting in an overheating condition, resulting in potential catastrophic engine damage.

• Overheating engine
• Engine not reaching optimal running temperature
• Radiator fan not engaging

About Meyle

Meyle Original Parts

The MEYLE ORIGINAL range comprises over 21,000 OE-compliant spare parts for almost all current passenger cars and vans – quality-tested, robust, durable and proven a thousandfold on the roads of the world You can find the parts you need safely and without any mix-ups here and will get them in next to no time thanks to a high level of availability.

The economical alternative to almost all servicing and repairs.

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First choice for professionals and people with high expectations.

Especially when it comes to the IAM and demanding gearheads, MEYLE ORIGINAL spare parts are an ideal choice to carry out repair and maintenance work professionally, economically and to a high standard! Therefore, MEYLE ORIGINAL spare parts are the first choice when it comes to keeping a vehicle in good working order economically – after all, MEYLE is the ‘driver’s best friend’ and as reliable as a good friend no matter what.