Mercedes A207 C218 Cylinder Head Left N/S 350 CDI 642853 Diesel A6420104506

Mercedes A207 C218 Cylinder Head Left N/S 350 CDI 642853 Diesel is an original component from the Cylinder Heads category, designed for Mercedes 350 CDI diesel engines. This used cylinder head provides a solid foundation for professional repair or refurbishment of the timing system and combustion chamber, ensuring the correct operating parameters of the diesel engine.

Specifications and technical data

• SKU: A6420104506
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420104506
• Substitutable numbers: A6420104506, A 642 010 45 06
• Location on the vehicle: Left
• Fuel type: Diesel
• Part type: Cylinder Head
• Category: Cylinder Heads

Purpose and function in the 350 CDI engine

The presented cylinder head is dedicated to Mercedes 350 CDI diesel engines, where it is responsible for precise valve operation, combustion chamber sealing, and stable heat dissipation. Its position on the left side of the engine makes it a key component for V6 engine repairs, where each head serves a separate bank of cylinders.

In a diesel engine, a properly selected cylinder head has a direct impact on:

• maintaining the correct compression ratio in each cylinder,
• stable operation of the fuel injection and combustion system,
• effective cooling and lubrication of the upper part of the engine.

Benefits of using an original Mercedes cylinder head

Using an original cylinder head in a 350 CDI engine allows you to maintain the factory operating parameters of the power unit. Precise fitment to the engine block reduces the risk of leaks, and compliance with factory specifications facilitates installation and subsequent maintenance.

The main advantages of using this component include:

• maintaining the geometry specified by the manufacturer,
• compatibility with 350 CDI engine accessories,
• suitability for use in the professional engine refurbishment process.

Technical characteristics and installation

The cylinder head is designed for a diesel-powered engine, which means the intake and exhaust ports as well as the combustion chambers are adapted to the specific requirements of a diesel unit. The left-side mounting position requires maintaining the correct orientation during installation and using the appropriate fasteners and seals specified for this side of the engine.

Before installation, standard workshop procedures are recommended, such as:

• verifying the flatness of the mating surface to the block,
• checking the condition of valve seats and guides,
• verifying the tightness of oil and coolant channels.

Application in Mercedes A207 and C218 vehicles

This cylinder head is used in Mercedes A207 and C218 series models equipped with the 350 CDI engine. As a result, it is a suitable choice for engine repairs in coupe and sedan vehicles, where maintaining the refinement, flexibility, and durability characteristic of this brand's diesel engines is essential.

By choosing this component, you receive a part that is structurally consistent with the factory solution, which facilitates integration with existing engine accessories and allows for the preservation of the manufacturer's specified performance parameters.

Condition and service recommendations

The cylinder head is a used component, which in practice means that standard verification and potential machining are required before installation, in accordance with procedures used in professional engine workshops. This type of component provides a good base for refurbishment, especially for repairs where compliance with the original design and cost optimization are important.

If you are planning a comprehensive repair or upgrade of your Mercedes engine area and need other components from the same group, such as other heads, covers, or fasteners, check out the available parts in the Mercedes Cylinder Heads category.

Additional technical support

Work on the powertrain often involves the need for parallel maintenance of associated systems, such as cooling or cabin heating. When planning a comprehensive service, a guide on selecting and maintaining components responsible for thermal comfort in the vehicle may be helpful – you can find it in the article Air conditioning and heating – part selection and maintenance for year-round comfort.