Description
Coolant flange/T-connector by VAG, catalog number 03H121131. Confirmed catalog fitment: Porsche CAYENNE (2002+), 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) 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.
A coolant flange or cooling system T-joint is a connector within the engine cooling circuit designed to distribute coolant flow between different hoses. It ensures leak-free connection and stable coolant circulation.
The component may be manufactured from heat-resistant plastic or metal. Depending on vehicle design, it may include mounting points for temperature sensors, sealing rings, or quick-connect fittings.
Failure symptoms include coolant leaks, antifreeze odor, dropping coolant level, or engine overheating.
Our catalog includes coolant flanges and T-connectors for many vehicle brands. Genuine cooling system components, reliable aftermarket replacements, and tested used units without cracks or deformation are available.
Used parts are inspected for housing integrity, sealing surface condition, absence of micro-cracks, and fitting wear.
Selection is based on VIN number, engine type, hose diameter, and part number. Replacing a damaged coolant flange restores system sealing and proper engine temperature control.
Compatibility
Fits 8 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...
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...