Thermostat cover 03H121121D

Description

Thermostat cover by VAG, catalog number 03H121121D. Confirmed catalog fitment: Volkswagen ATLAS CA1, CA2, CA3 (2016+), Volkswagen ATLAS CROSS SPORT CMC, CMD (2019+), Volkswagen ATLAS TERAMONT TERAMONT CA1, CA2, CA3 (2017+), Volkswagen PASSAT CC B6 357 (2008–2012), Volkswagen PASSAT CC B6 357 (2008–2012) and other body variants. For an accurate match, compare the number and identification with the removed part and confirm the vehicle specification by VIN. The fitment list is a reference and does not replace a vehicle-specific compatibility check.

THERMOSTAT HOUSING COVER. The thermostat housing cover is a component of the engine cooling system designed to seal the thermostat housing and control the flow of coolant between the engine block, radiator and cooling hoses. The cover is mounted on the thermostat housing and secured with bolts using a gasket or sealing ring to maintain a leak-proof connection. Depending on engine design the component may be manufactured from aluminum alloy or reinforced heat-resistant plastic capable of withstanding high temperatures, coolant pressure and chemical exposure. The cover may also incorporate hose connections or mounting points for temperature sensors. Proper sealing of the thermostat housing ensures stable coolant circulation and optimal engine operating temperature. Damage may result in coolant leakage, overheating or deformation of the housing. Our catalog includes genuine OEM thermostat covers, quality aftermarket replacements and inspected used cooling system components without cracks or sealing surface damage. Used parts are checked for structural integrity and proper mounting condition. Selection is performed by VIN number, engine type and part number. Correct replacement ensures reliable cooling system operation and proper engine temperature control.

Compatibility

Fits 10 vehicles

Nothing found

About the manufacturer · VAG

VAG is a commonly used abbreviation referring to the Volkswagen Group, one of the largest automotive manufacturers and component producers in the world. The group was founded in Germany and includes many well‑known autom...

VAG is a commonly used abbreviation referring to the Volkswagen Group, one of the largest automotive manufacturers and component producers in the world. The group was founded in Germany and includes many well‑known automotive brands such as Volkswagen, Audi, Škoda, SEAT, Porsche, Bentley, Lamborghini and several others. In the automotive spare parts market the term VAG usually refers to genuine components designed for vehicles produced within the Volkswagen Group. The product range includes engine components, fuel injection system parts, turbochargers, transmission elements, suspension components, braking systems, electronic modules, sensors, cooling system parts and body components. Genuine VAG parts are developed according to unified engineering standards used across the Volkswagen Group and undergo strict quality control and testing for durability, reliability and safety. This ensures precise compatibility with vehicles of the group and stable operation of all vehicle systems. According to feedback from vehicle owners and automotive repair specialists, VAG genuine parts are known for their high manufacturing quality, strong reliability and long service life. Users frequently highlight precise fitment without the need for modifications and full compliance with factory specifications. The most commonly mentioned drawback is the relatively higher cost compared with many aftermarket alternatives, although many drivers consider original VAG parts the best option for maintaining vehicle reliability and factory performance.

Additional information

Thermostat cover by VAG, catalog number 03H121121D, is listed for vehicle repair or maintenance. The catalog identifies the item as “Thermostat cover”. Confirmed catalog fitment: Volkswagen ATLAS CA1, CA2, CA3 (2016+), Volkswagen ATLAS CROSS SPORT CMC, CMD (2019+), Volkswagen ATLAS TERAMONT TERAMONT CA1, CA2, CA3 (2017+), Volkswagen PASSAT CC B6 357 (2008–2012), Volkswagen PASSAT CC B6 357 (2008–2012), Volkswagen PASSAT CC B7 358 (2011–2016) and other body variants. Fitment is based on the catalog links between the part and vehicle bodies. It helps narrow the search, but final compatibility must be confirmed for the exact vehicle specification. The primary ordering references are part number 03H121121D and manufacturer VAG. Parts can differ within the same vehicle model by production year, engine, transmission, installation side, or position. Before purchase, compare the number and identification with the removed component and verify body, year, and specification by VIN.

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