Description
EGR cooler by MERCEDES, catalog number A6421401875. Confirmed catalog fitment: Mercedes-Benz M-Classe W164 (2005–2011), Mercedes-Benz S-Class W221 (2005–2013). 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.
An EGR cooler (EGR radiator) is a component of the exhaust gas recirculation system designed to cool exhaust gases before they are redirected into the intake manifold. Lower exhaust gas temperature reduces nitrogen oxide (NOx) emissions and improves engine environmental performance.
The EGR cooler is installed between the exhaust manifold and the EGR valve and works together with the engine cooling system, EGR valve, temperature sensors, and engine control unit.
A faulty EGR cooler may cause coolant leaks, white exhaust smoke, unexplained coolant loss, EGR system fault codes, unstable engine operation, or overheating.
Our catalog includes EGR coolers for many vehicle brands. Available options include genuine factory EGR system components, reliable aftermarket replacements, and tested used coolers without cracks or internal damage. Solutions for both petrol and diesel engines across different generations are available.
Used parts are inspected for sealing integrity, absence of cracks, corrosion, burn-through, and internal leakage.
Selection is available by VIN number, engine code, part number, and vehicle year. Replacing a faulty EGR cooler restores proper exhaust recirculation and engine temperature management.
Compatibility
Fits 2 vehicles
Nothing found
About the manufacturer · MERCEDES
Mercedes‑Benz is a German premium automotive brand and one of the oldest automobile manufacturers in the world, with its history dating back to 1886 when Karl Benz created the first gasoline‑powered automobile. Today the...
About the manufacturer · MERCEDES
Mercedes‑Benz is a German premium automotive brand and one of the oldest automobile manufacturers in the world, with its history dating back to 1886 when Karl Benz created the first gasoline‑powered automobile. Today the...