Expansion tank cap 1245000406

Description

Expansion tank cap by MERCEDES, catalog number 1245000406. Confirmed catalog fitment: Mercedes-Benz C-Class S202 (1996–2001), Mercedes-Benz C-Class W202 (1993–2000), Mercedes-Benz CLK A208 (1998–2002), Mercedes-Benz CLK C208 (1997–2002), Mercedes-Benz E-Class A124 (1991–1998) 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.

COOLANT EXPANSION TANK CAP. The coolant expansion tank cap is a component of the engine cooling system designed to seal the expansion tank and maintain the correct pressure level inside the cooling circuit. By maintaining controlled pressure the cap increases the boiling point of the coolant and helps prevent vapor formation within the cooling system. The cap typically consists of a durable heat-resistant plastic housing with an integrated pressure relief valve mechanism. The internal spring-loaded valve opens when system pressure exceeds the specified limit, releasing excess pressure and protecting the radiator, hoses and expansion tank from damage. When the engine cools the valve allows coolant to return to the system to maintain proper circulation. Failure of the expansion tank cap may cause coolant leaks, engine overheating or unstable pressure levels in the cooling system. Our catalog includes genuine OEM coolant expansion tank caps, quality aftermarket replacements and inspected used components free from structural damage. Used parts are checked for thread integrity, valve operation and sealing gasket condition. Selection is performed by VIN number, cooling system specification and part number. Proper replacement ensures correct cooling system pressure and reliable engine temperature control.

Compatibility

Fits 18 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...

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 brand is part of Mercedes‑Benz Group and is recognized globally as a leading manufacturer of passenger cars, commercial vehicles and genuine automotive spare parts. Under the Mercedes‑Benz brand a wide range of original components is produced for the company’s vehicles, including engine parts, cooling system components, suspension elements, braking systems, transmission components, electronic modules, body parts and various maintenance and service items. Genuine Mercedes‑Benz parts are designed according to strict factory engineering standards and undergo comprehensive quality control throughout the production process. This ensures precise fitment, reliable performance and full compatibility with the vehicles they are intended for. According to feedback from car owners and automotive repair professionals, Mercedes‑Benz genuine parts are highly regarded for their excellent build quality, long service life and dependable operation even under demanding driving conditions. Many users also highlight the perfect fit and ease of installation of original components. The most frequently mentioned drawback is the relatively high price compared with many aftermarket alternatives, although many vehicle owners consider the cost justified due to the durability, safety and preservation of the vehicle’s original factory performance.

Additional information

Expansion tank cap by MERCEDES, catalog number 1245000406, is listed for vehicle repair or maintenance. The catalog identifies the item as “Expansion tank cap”. Confirmed catalog fitment: Mercedes-Benz C-Class S202 (1996–2001), Mercedes-Benz C-Class W202 (1993–2000), Mercedes-Benz CLK A208 (1998–2002), Mercedes-Benz CLK C208 (1997–2002), Mercedes-Benz E-Class A124 (1991–1998), Mercedes-Benz E-Class C124 (1987–1997) 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 1245000406 and manufacturer MERCEDES. 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. Also compare appearance, connectors, mountings, dimensions, and included items whenever those details are relevant to this part.

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