Description
Oil cooler/heat exchanger by MERCEDES, catalog number A6421800165. Confirmed catalog fitment: Mercedes-Benz C-Class S203 (2001–2007), Mercedes-Benz C-Class S204 (2007–2014), Mercedes-Benz C-Class W203 (2000–2007), Mercedes-Benz C-Class W204 (2007–2014), Mercedes-Benz CLK A209 (2003+) 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.
An oil cooler (heat exchanger) is a component of the engine or transmission cooling system designed to regulate oil temperature. It prevents overheating and ensures stable lubrication performance under heavy operating conditions.
Oil coolers may be air-cooled with a separate radiator or liquid-cooled, integrated into the engine cooling circuit. The design includes oil passages, coolant channels, and sealing components.
Failure symptoms may include oil leakage, mixing of oil and coolant, pressure drop, engine overheating, or transmission performance issues.
Our catalog includes oil coolers and heat exchangers for many vehicle brands. Genuine cooling system components, reliable aftermarket replacements, and tested used units without corrosion or leakage are available.
Used heat exchangers are inspected for sealing integrity, thread condition, absence of cracks or deformation, and internal channel cleanliness.
Selection is based on VIN number, engine or transmission type, cooling configuration, and part number. Replacing a faulty oil cooler maintains proper operating temperature and extends engine life.
Compatibility
Fits 34 vehicles
Nothing found
Which car this part came from
Photos, VIN and details of the donor car.
- VIN
- WDB2110221A854915
- Make
- Mercedes-Benz
- Model
- E-Class
- Body
- W211
- Body type
- sedan
- Year
- 2002
- Engine
- 3 L · diesel · OM642
- Gearbox
- automatic
- Drive
- rear-wheel
- Colour
- silver
- Mileage
- 325 000 km
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...