More Audi Engine Coolant Thermostat - Genuine Audi 050121113B
Genuine Audi
SKU: VAG-050121113B

Audi Engine Coolant Thermostat - Genuine Audi 050121113B

TT Quattro

80°C - 102°C | Position 3 in diagram

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Description

Details

SKU:
VAG-050121113B
FCP Euro ID:
399803
Quality:
Genuine

OE Numbers

050121113B

MFG Numbers

N/A

Product Information

Genuine Audi Engine Coolant Thermostat

This Engine Coolant Thermostat is designed to be utilized in the 8N TT 225 Models. With a different opening temperature threshold, this helps maintain a lower operating temperature range and reduces engine stress/wear during cold start conditions. This is also a common upgrade for those who live in a hot climate area.

Please Note: This Engine Coolant Thermostat does not come with the Engine Coolant Thermostat Gasket. See below for the correct part number.

Engine Coolant Thermostat

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.

Engine Coolant Thermostat Failure Symptoms
  • Overheating engine
  • Engine not reaching optimal running temperature
  • Radiator fan not engaging

About Genuine Audi

The original parts used by Audi to build your car are available as replacement parts under the “Genuine Audi” brand. Manufactured under the direction of Audi, expect excellent quality and a premium price since these parts are available exclusively through the Audi Dealership network.

You may not realize this, but the parts that make up your Audi are not necessarily manufactured by Audi. No cause for concern, as Audi designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for Audi for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine Audi parts box and find an OEM branded part inside, simply with the addition of an Audi logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.

Fits These Cars

Audi TT Quattro

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Product Reviews

1 Review

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Leave a review
Rory Burke
on Mon, Apr 06 at 05:44PM
No o-ring
I bought the genuine Audi thermostat and it arrived without an o-ring. Searched FCP Euros site for the o ring and no results. Disappointing!

Reply from FCP Euro

Hi Rory, thank you for your feedback and we are sorry you had trouble finding the associated gasket. We try to follow industry standardized data formats when associating a Part Type to our product listings. This derives from ACES (Aftermarket Catalog Exchange Standard) which supports automotive application (fitment) data. In this certain instance, we have 038121119B listed as an "Engine Coolant Thermostat Gasket." If you ever run into an instance like this where you cannot find a part that you need, please reach out to out team at service@fcpeuro.com and we will be happy to assist.

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