Audi / Porsche / Volkswagen Thermostat Housing 03H121117A
OEM Part #: 03H-121-117-A (03H121117A)
This page covers one exact OEM part number. Every unit we stocked has sold.
We may be able to get another
Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
Other Thermostat Housing that may fit your vehicle
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Thermostat Housing
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Replace your worn or malfunctioning thermostat housing with this genuine OEM part, part number 03H121117A. Designed for optimal performance in a variety of models, this component fits the 2007-2011 Audi Q7, 2006-2011 Volkswagen Passat, 2007-2011 Volkswagen Touareg, and 2009-2011 Volkswagen CC. Positioned lower in the engine compartment, its primary role is to regulate coolant flow, ensuring your engine maintains optimal temperature. Common issues resolved by this thermostat housing include overheating, coolant leaks, and erratic temperature readings. Alternative names include engine coolant thermostat housing. Experience a seamless, factory-fit replacement that restores your vehicle's functionality.
Specifications
| Fits Vehicle Model | Cayenne, CC, Passat, Q7, Touareg |
| Fits Vehicle Make | Audi, Porsche, Volkswagen |
| OEM Part No | 03H-121-117-A (03H121117A) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 21 vehicle configurations across 3 makes, 2007-2011.
View all 21 vehicle configurations — 8 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2007 | Audi | Q7 | SUV | 3.6L V6 | |
| 2008 | Audi | Q7 | SUV | 3.6L V6 | |
| 2009 | Audi | Q7 | SUV | 3.6L V6 | |
| 2010 | Audi | Q7 | SUV | 3.6L V6 | |
| 2008 | Porsche | Cayenne | SUV | 3.6L V6 | |
| 2009 | Porsche | Cayenne | SUV | 3.6L V6 | |
| 2010 | Porsche | Cayenne | SUV | 3.6L V6 | |
| 2007 | Volkswagen | Passat | Sedan | 3.6L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 120001 |
| 2007 | Volkswagen | Passat | Wagon | 3.6L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 120001 |
| 2007 | Volkswagen | Touareg | SUV | 3.6L V6 | |
| 2008 | Volkswagen | Passat | Sedan | 3.6L V6 | |
| 2008 | Volkswagen | Passat | Wagon | 3.6L V6 | |
| 2008 | Volkswagen | Touareg | SUV | 3.6L V6 | |
| 2009 | Volkswagen | CC | 4Motion Sedan | 3.6L V6 | For Vehicles With Production date Up To 08/01/10 |
| 2009 | Volkswagen | CC | Sedan | 3.6L V6 | For Vehicles With Production date Up To 08/01/10 |
| 2009 | Volkswagen | Touareg | SUV | 3.6L V6 | |
| 2010 | Volkswagen | CC | 4Motion Sedan | 3.6L V6 | For Vehicles With Production date Up To 08/01/10 |
| 2010 | Volkswagen | CC | Sedan | 3.6L V6 | For Vehicles With Production date Up To 08/01/10 |
| 2010 | Volkswagen | Touareg | SUV | 3.6L V6 | |
| 2011 | Volkswagen | CC | 4Motion Sedan | 3.6L V6 | For Vehicles With Production date Up To 08/01/10 |
| 2011 | Volkswagen | Touareg | SUV | 3.6L V6 | For Vehicles With Production date Up To 08/01/10 |